AN INVESTIGATION OF THE THERMAL SHOCK BEHAVIOR OF THERMAL BARRIER COATINGS
|
|
- Sabina Harris
- 6 years ago
- Views:
Transcription
1 AN INVESTIGATION OF THE THERMAL SHOCK BEHAVIOR OF THERMAL BARRIER COATINGS ANDERSON.A Research scholar, Sathyabama University, Chennai, India. Phone: RAMACHANDRAN.S Professor and Head, Department of Mechanical Engineering, Sathyabama University, Chennai, India. Abstract: High temperature thermal cycling fatigue causes the breakdown of Thermal Barrier Coating (TBC) systems. This paper presents the development of thick TBCs, focusing attention on the microstructure of the Yttria Partially Stabilized Zirconia (YPSZ) coating and Zirconia ceria powder (Ce+YPSZ), in relation to its resistance to thermal cycling fatigue. Thick TBCs, were produced by means of a CoNiCrAlY bond coat and Yttria Partially Stabilised Zirconia top coat or Zirconia ceria powder (Ce+YPSZ), both sprayed by Atmospheric Plasma Spray process. The thermal fatigue resistance of new TBC systems and the evolution of the coatings before and after thermal cycling were evaluated. The limit of thermal fatigue resistance increases in the Zirconia ceria powder (Ce+YPSZ) top coat. Keywords : Atmospheric plasma spray coating, thermal cycling, Thermal Resistance 1. Introduction Thermal Barrier Coatings (TBCs) are applied on gas turbine and aeronautical engine components in order to improve their oxidation resistance and their service life time through a reduction of the service temperature. The TBC systems consist of a duplex structure made up of a metallic MCrAlY (M stands for either Co, Ni or Fe or a combination of these elements) bond coat and yttria-partially stabilized zirconia (YPSZ) ceramic top coat. The bond coat is typically obtained by means of either vacuum plasma spray (VPS), atmospheric plasma spraying (APS) or high-velocity oxy-fuel (HVOF) techniques; the top coat is typically deposited by APS process [1-3]. The bond coat surface, onto which the YPSZ top coat is deposited, has a thin oxide layer that consists mainly of various oxides (NiO, Ni(Cr,Al)2O4, Cr2O3, Y2O3, Al2O3). The presence of this thin oxide layer provides the adhesion (bonding) between the metallic bond coat and the ceramic top coat[4]. However, during engine operation, another oxide layer forms in addition to the native oxide. This second layer, which is composed mainly by alumina, is commonly referred to as the thermally grown oxide (TGO) and it grows slowly during exposure to elevated temperatures[5-7]. TBC systems have a tendency to fail by spalling or debonding processes under cyclic high temperature conditions. The performance of TBCs is affected by thermal expansion mismatch between the ceramic and the metal, thermal stresses generated by the temperature gradients in the TBC, ceramic sintering, phase transformations, corrosive and erosive attack and residual stresses arising from the deposition process [8, 9]. The growth of thermally grown oxides (mainly alumina) between the bond coat and the top coat layers, cause large residual stresses which lead to the spallation of TBC, too [10].The aims of this work were to compare the resistance of the various TBC systems at thermal fatigue. 2. Experimental Procedure 2.1 Thermal shock behavior Stainless steel 304 metal discs (diameter: 25 mm; thickness: 5 mm) were used as substrates for the present study. The bond coat of the samples was obtained by means of Atmospheric Plasma Spray using commercial CoNiCrAlY powder (with a grain size distribution in the range μm); the thickness of the bond coat was in the range 10 μm. Furthermore ceramic coating (top coat) was deposited by Atmospheric ISSN : Vol. 3 No. 11 November
2 Plasma Spray, using a Yttria Partially Stabilised Zirconia grain size distribution in the range of μm. The thickness of the outer coat was in the range 150 μm.the composition of the powder is shown in Table 1. Table 1. Chemical composition of Yttria Partially Stabilised Zirconia powder (YPSZ) compounds Percentage Yttrium oxide (Y 2 O 3 ) 8% Zirconium Oxide (Zr 2 O 3 ) 92% Table 2. Chemical composition of Zirconia Ceria powder (Ce+YPSZ) compounds Percentage Yttrium oxide (Y 2 O 3 ) 8% Zirconium Oxide (Zr 2 O 3 ) 67% Cerium Oxide (CeO 2 ) 25% Furnace cycle tests (ASTM C ) was performed by using a test equipment consisting of an isothermal static air furnace a specimen tray in stainless steel positioned on a vertical elevator, and a circular tube for forced cooling of specimens when elevator is lowered. Each thermal cycle in the Furnace Cycle Test consist of a 5-minute heat up to the steady-state temperature, a 45-minute soak at the steady-state temperature and a 10-minute forced air cool down. The chosen steady-state temperature was 1150 C. According the Original Engine Manufacturer (OEM) specification,the The minimum requested number of thermal cycle to pass the thermal cycling fatigue test is 250 cycle[11]. Metallographic investigation has been performed by means Scanning Electron Microscope in order to determine coatings microstructure. 3. Results and Discussion 3.1 Coating Characterization Figure 1. shows the surface of the obtained Yttria Partially Stabilised Zirconia powder (YPSZ) top coat coatings. Figure 2. shows the surface of the obtained Zirconia Ceria powder (Ce+YPSZ) top coat coatings. The image reveals that the Zirconia Ceria powder (Ce+YPSZ) top coat coatings are densly packed than the Yttria Partially Stabilised Zirconia powder (YPSZ) top coat coatings Fig 1. Scanning Electron Microscope images of YPSZ top coat of the made TBC s ISSN : Vol. 3 No. 11 November
3 Fig 2. Scanning Electron Microscope images of Ce+YPSZ top coat of the made TBC s Table 3 shows the level of porosity, measured by image analysis for each type of coating materials. Table 3. Porosity of different coating material Coating Material Porosity % YPSZ Ce+YPSZ Thermal Fatigue Behavior of Coated Samples As mentioned previously, according to the applied OEM specification, the minimum requested number of thermal cycle to pass the thermal cycling fatigue test is 250 cycle. The cracking mode is different when YPSZ top coat is produced by either APS or EB-PVD techniques [12] and it may be influenced also by coating thickness. Normally the thicker TBCs provide a greater temperature drop across the coatings. In addition, the increased thickness of the coating will increase the stored elastic strain energy and hence the energy release rate for a crack [13]. Thus, the failure mechanisms that cause spallation of thick TBCs are expected to be different in some degree from those of the traditional thin TBCs. Failure of thin plasma sprayed TBCs occurs in most cases by interface delamination due to different thermomechanical properties of the coating and substrate and oxidation of the bond coat [14 17]. In particular, thick TBCs have a worse thermal shock resistance than thin TBCs.In the Thermal shock test the type of damage is only by peel off. The peel off shows the starting of damage. The coated specimen was planned to keep for 250 cyles. After coating, the specimens were examined visually for appearance and tested in Thermal shock equipment for thermal resistance.the table 4 determines the weight loss of the specimen coated by yitria stabilized zirconia (8% Y 2 O % Zr 2 O 3 ) exposed to the thermal shock test is shown for various exposure cycles. The peel off on a sample started at 145 hours. Initially the weight of the specimen was gms. After the 145 hours the gms. Initial weight Table 4. The weight of coated sample by YPSZ 145 hours 175 hours 200 hours The specimen coated by zirconia Ceria Powder (8% Y 2 O % Zr 2 O 3 +25% CeO 2 ). exposed to the thermal shock test did not peel off till 250 cycles. The surface views of the SS304 steel specimens are given below ISSN : Vol. 3 No. 11 November
4 Fig.3 yitria stabilized zirconia 8% Y 2O 3+ 92% Zr 2O 3(before the test) Fig.4 yitria stabilized zirconia 8% Y2O 3+ 92% Zr 2O 3(after the test) Fig 3, Fig 4 represents the yitria stabilized zirconia 8% Y 2 O % Zr 2 O 3 coated sample before and after the test. Fig 5, Fig 6 represents the Zirconia Ceria powder (8% Y 2 O % Zr 2 O 3 +25% CeO 2 ) coated sample before and after the test. Fig.5 Ceria+Yttria Partially Stabilised Zirconia powder (before the test) Fig.6 Zirconia Ceria Powder (8% Y 2O 3+ 67% Zr 2O 3+25% CeO 2) (after the test) 4. Conclusion TBC systems with different chemical composition with an average thickness of 250 µm were made by APS. The TBCs were characterized and their thermal fatigue behavior was tested. Thermal schok test were conducted for Zirconia Ceria powder coated sample (8% Y2O3+ 67% Zr2O3+25% CeO2) and yitria stabilized zirconia 8% Y2O3+ 92% Zr2O3 coated sample. The experimental results revealed that the Zirconia Ceria coated (8% Y2O3+ 67% Zr2O3+25% CeO2) coated sample has much Thermal resistance than yitria stabilized zirconia 8% Y2O3+ 92% Zr2O3 coated sample. ISSN : Vol. 3 No. 11 November
5 References [1] Brandl,W., Toma,D., J. Krüger, J., H.J. Grabke,H.J and Matthäus,G.,1997, The oxidation behaviour of HVOF thermalsprayed MCrAlY coatings, Surf. Coat. Technol., Vol 94 95, p [2] Toma,D., Brandl,W. and Koster,U., 1999, Studies on the transient stage of oxidation of VPS and HVOF sprayed MCrAlY coatings, Surf. Coat. Technol., Vol 120, p [3] Lugscheider,E., Herbst,C. and Zhao,L., 1998 Parameter studies on high- velocity oxy-fuel spraying of MCrAlY coatings, Surf. Coat. Technol., Vol , p [4] Lee,E.Y. and Sisson,R.D. Jr.,1994 The effect of bond coat oxidation on the failure of thermal barrier coatings, 7 th National Thermal Spray Conference Proc., p. 55 (Boston, Massachusetts) [5] Yaslier,Y. and Alperine,S., 1998 EB-PVD Thermal Barrier Coatings: Comparative Evaluation and Competing Deposition Technologies, (Report 823, AGARD, Thermal Barrier Coatings) [6] Haynes,J.A., M.K. Ferber,M.K. and Porter,W.D., 2000 Thermal Cycling Behavior of Plasma-Sprayed Thermal Barrier Coatings with Various MCrAIX Bond Coats, J. Thermal Spray Technology., Vol 9, p [7] He.Y, K.N. Lee, S. Tewari and R.A. Miller, 2000 Development of Refractory Silicate-Yttria-Stabilized Zirconia Dual-Layer Thermal Barrier Coatings, J. Thermal Spray Technology., Vol 9 (No 1), p [8] Allen Haynes,J., Douglas Rigney,E., Ferber.M.K. and W. D. Porter, 2000 Thermal cycling behavior of plasma-sprayed thermal barrier coatings with various MCrAIY bond coats, J. Thermal Spray Technol., Vol 9 (No 1) p [9] Scardi,P., M. Leoni,M. and L. Bertamini,L.,1995 Influence of phase stability on the residual stress in partially stabilized zirconia TBC produced by plasma spray, Surf. Coat. Technol., Vol , p [10] Kuroda,S., and Clyne,T.W.,2000 The quenching stress in thermally sprayed coatings, Thin Solid Films, Vol 200, p [11] Scrivani,A. and Rizzi,G., Thermal Fatigue Behaviour of Thick and Porous Thermal Barrier Coatings Systems [12] Evans,A.G., Mumm,D.R., Hutchinson,J.W., Meier,G.H. and Pettit,F.S., 2001 Mechanisms controlling the durability of thermal barrier coatings, Prog. Mater Sci., Vol. 46, p [13] Hutchinson,J.W. and Suo,Z., 1992 Mixed mode cracking in layered materials, Adv. Appl. Mech., Vol 29, p [14] Tzimas,E., Müllejans,H., Peteves,S.D., Bressers.J., and Stamm,W.,2000 Failure of thermal barrier coating systems under cyclic thermomechanical loading, Acta Mater., Vol. 48, p [15] Qian,G., Nakamura,T., Berndt,C.C. and S.H. Leigh, 1997, Tensile toughness test and high temperature fracture analysis of thermal barrier coatings, Acta Mater., Vol. 45, p [16] De Masi Marcin,J.T., K.D. Sheffler,K.D. and Bose,S., 1990, J. Eng. Gas Turb. Power, Vol 112, p [17] Rabiei,A., Evans,A.G., 2000, Failure mechanisms associated with the thermally grown oxide in plasma-sprayed thermal barrier coatings, Acta Mater., Vol. 48, p ISSN : Vol. 3 No. 11 November
Thermal Conductivity and Sintering Behavior of Hafnia-based Thermal Barrier Coating Using EB-PVD
Proceedings of the International Gas Turbine Congress 2003 Tokyo November 2-7, 2003 IGTC2003Tokyo TS-131 Thermal Conductivity and Sintering Behavior of Hafnia-based Thermal Barrier Coating Using EB-PVD
More informationCorrelating Thermal Barrier Coating Microstructure Between Engine Run Combustion Hardware and Furnace Cycle Testing
Correlating Thermal Barrier Coating Microstructure Between Engine Run Combustion Hardware and Furnace Cycle Testing Kara Phillips Bridges Solar Turbines Incorporated Materials and Processes Engineering
More informationto which it is applied. Using this approach temperature drops of up to 170 o C at the metal
Chapter 2 Thermal Barrier Coatings 2.1 Overview By attaching an adherent layer of a low thermal conductivity material to the surface of a internally cooled gas turbine blade, a temperature drop can be
More informationCrack prediction in EB-PVD thermal barrier coatings based on the simulation of residual stresses
IOP Conference Series: Materials Science and Engineering PAPER OPEN ACCESS Crack prediction in EB-PVD thermal barrier coatings based on the simulation of residual stresses To cite this article: J W Chen
More informationToughness measurement of Thermal Barrier Coatings (TBCs)
Class: Master Project of Engineering Science Advisor # 1: Professor Ernesto Gutierrez-Miravete Advisor # 2: Professor Bose, Sudhangshu Name: Danh Tran Toughness measurement of Thermal Barrier Coatings
More informationDUPLEX STRUCTURES, CERAMIC, MICROSTUCTURATED, ON THE BASIS OF PARTIALLY STABILIZED ZIRCONIA WITH CERIUM OXIDE
HENRI COANDA AIR FORCE ACADEMY ROMANIA INTERNATIONAL CONFERENCE of SCIENTIFIC PAPER AFASES 2013 Brasov, 23-25 May 2013 GENERAL M.R. STEFANIK ARMED FORCES ACADEMY SLOVAK REPUBLIC DUPLEX STRUCTURES, CERAMIC,
More informationFatigue Lifetime Approximation Based On Quantitative Microstructural Analysis For Air Plasma Sprayed Thermal Barrier Coatings
University of Central Florida Electronic Theses and Dissertations Masters Thesis (Open Access) Fatigue Lifetime Approximation Based On Quantitative Microstructural Analysis For Air Plasma Sprayed Thermal
More informationMaterials Science and Engineering Department, University of Pittsburgh, Pittsburgh, PA, 15261
PROCESSING EFFECTS ON THE FAILURE OF EBPVD TBCs ON MCrAlY AND PLATINUM ALUMINIDE BOND COATS N. M. Yanar, M.J. Stiger, G. H. Meier and F. S. Pettit Materials Science and Engineering Department, University
More informationSTRUCTURAL STABILITY OF THERMAL BARRIER COATINGS PRODUCED BY THERMAL SPRAYING
STRUCTURAL STABILITY OF THERMAL BARRIER COATINGS PRODUCED BY THERMAL SPRAYING Ladislav ČELKO a,b, Lenka KLAKURKOVÁ a,b, Karel SLÁMEČKA a,b, Simona POSPÍŠILOVÁ a,b, Martin JULIŠ a,b, Karel NĚMEC a,b, Tomáš
More informationAlternative Thermal Barrier Coatings for Diesel Engines
Alternative Thermal Barrier Coatings for Diesel Engines H. Samadi, T.W.Coyle Centre for Advanced Coating Technologies, University of Toronto, Toronto, Ontario, Canada Abstract The use of thermal barrier
More informationEROSION OF GADOLINIA DOPED EB-PVD TBCs
EROSION OF GADOLINIA DOPED EB-PVD TBCs R. Steenbakker, R.G Wellman and J.R Nicholls School of Industrial and Manufacturing Science Cranfield University, Bedford, MK 43 OAL, UK. Abstract Thermal barrier
More informationPRODUCTION AND CHARACTERIZATION OF SELF-HEALING PROPERTIES OF B4C+SIC ADDED TBC.
PRODUCTION AND CHARACTERIZATION OF SELF-HEALING PROPERTIES OF B4C+SIC ADDED TBC Fatih Üstel, Ahmet TÜRK, Garip Erdogan Sakarya University Eng. Fac. Materials, Sakarya/Serdivan, Turkey Abstract ustel@sakarya.edu.tr
More informationScienceDirect
Available online at www.sciencedirect.com ScienceDirect www.materialstoday.com/proceedings Materials Today: Proceedings 1 (2014 ) 35 43 The 1st International Joint Mini-Symposium on Advanced Coatings between
More informationThe oxidation behavior of classical thermal barrier coatings exposed to extreme temperature
The oxidation behavior of classical thermal barrier coatings exposed to extreme temperature Alina DRAGOMIRESCU*,1,2, Adriana STEFAN 1, Alexandru MIHAILESCU 1, Cristina-Elisabeta PELIN 1, Victor MANOLIU
More informationSprayTech. Flame Spray Technologies. Flame Spray Technologies Service Centers. MCrAlY Powders. Head Quarters Flame Spray Technologies
Service Centers, Italy Tel: (+39) 02 27 409151 Fax: (+39) 02 25 029434, UK Tel: (+44) 1252 78 22 97 Fax: (+44) 1252 78 13 62, USA Tel: (+1) 616 67 63 006 Fax: (+1) 616 67 63 660, Japan Tel: (+81) 3 5342
More informationThermal Durability and Abradability of Plasma Sprayed Al-Si-Polyimide Seal Coatings p. 85
Trends in Automotive Applications of Thermal Spray Technology in Japan p. 1 Production Plasma in the Automotive Industry: A European Viewpoint p. 7 The Effect of Microstructure on the Wear Behavior of
More informationThe behavior of multilayer ceramic protections at quick thermal shock
The behavior of multilayer ceramic protections at quick thermal shock Gheorghe IONESCU*,1, Victor MANOLIU 2, Elvira ALEXANDRESCU 3, Adriana STEFAN 1, Alexandru MIHAILESCU 1 *Corresponding author *,1 INCAS
More informationINFLUENCE OF ISOTHERMAL EXPOSURE ON MICROSTRUCTURAL CHANGES RESULTING IN DELAMINATION OF EUTECTIC AL 2O 3+ZRO 2+SIO 2 THERMAL BARRIER COATINGS
INFLUENCE OF ISOTHERMAL EXPOSURE ON MICROSTRUCTURAL CHANGES RESULTING IN DELAMINATION OF EUTECTIC AL 2O 3+ZRO 2+SIO 2 THERMAL BARRIER COATINGS David JECH a,b, Ladislav ČELKO a,b, Tomáš CHRÁSKA c, Karel
More informationJ.A.Thompson, Y.C.Tsui, R.C.Reed, D.S.Rickerby & T.W.Clyne. 1. Introduction. 2. Experimental Procedures
CREEP OF PLASMA SPRAYED CONICRALY AND NICRALY BOND COATS AND ITS EFFECTS ON RESIDUAL STRESSES DURING THERMAL CYCLING OF THERMAL BARRIER COATING SYSTEMS J.A.Thompson, Y.C.Tsui, R.C.Reed, D.S.Rickerby &
More informationHigh Sensitive NDE of Subsurface Local Damages in Thermal Barrier Coating Systems by the Laser Speckle Method
Transactions of JWRI, Vol.36 (27), No.1 High Sensitive NDE of Subsurface Local Damages in Thermal Barrier Coating Systems by the Laser Speckle Method WAKI Hiroyuki*, NISHIKAWA Izuru** and KOBAYASHI Akira***
More informationEffect of Annealing on Plasma Sprayed Zirconia/ Alimina Composite Coating
ransactions of JWRI, Vol. 35 (2006), No. 2 Effect of Annealing on Plasma Sprayed Zirconia/ Alimina Composite Coating KOBAYASHI Akira*, Shanmugavelayutham Gurusamy**, ANDO Yasutaka*** Abstract In thermal
More informationPratt & Whitney Thermal Barrier Coating Development
Pratt & Whitney Thermal Barrier Coating Development Mladen F. Trubelja (trubelm@pweh.com; 860-565-0249) David M. Nissley (nissledm@pweh.com; 860-565-5843) Norman S. Bornstein (bornstns@utrc.utc.com; 860-610-7487)*
More informationInternational Journal of Fatigue
International Journal of Fatigue 53 (2013) 33 39 Contents lists available at SciVerse ScienceDirect International Journal of Fatigue journal homepage: www.elsevier.com/locate/ijfatigue Adhesion strength
More informationArch. Metall. Mater. 62 (2017), 3,
Arch. Metall. Mater. 62 (2017), 3, 1433-1437 DOI: 10.1515/amm-2017-0221 A. JASIK* # THE NUMERICAL MODELING OF THERMAL STRESS DISTRIBUTION IN THERMAL BARRIER COATINGS The paper presents the results of numerical
More informationBond Coat Oxidation and Hot Corrosion Behavior of Plasma
Bond Coat Oxidation and Hot Corrosion Behavior of Plasma Sprayed YSZ Coating on Ni Superalloy SAREMI Mohsen *, AFRASIABI Abbas ** and KOBAYASHI Akira *** Abstract Oxidation and hot corrosion are considered
More informationA Numerical Study on Generation Mechanism of Vertical Cracks in Top Coat of TBCs During APS Deposition K. Ito, H. Kuriki, and M.
JTTEE5 24:730 738 DOI: 10.1007/s11666-015-0232-4 1059-9630/$19.00 Ó ASM International Peer Reviewed A Numerical Study on Generation Mechanism of Vertical Cracks in Top Coat of TBCs During APS Deposition
More informationImpact Fatigue Failure Investigation of HVOF Coatings
C. N. David, 1 M. A. Athanasiou, 1 K. G. Anthymidis, 1 and P. K. Gotsis 1 Journal of ASTM International, Vol. 5, No. 6 Paper ID JAI101571 Available online at www.astm.org Impact Fatigue Failure Investigation
More informationThermal Spray Coatings in Severe Service Elaine Motyka 3/2/2017
Thermal Spray Coatings in Severe Service Elaine Motyka 3/2/2017 In this session Basics of Thermal Spray Coatings Defining Thermal Spray Common processes Coating microstructures Properties affected by process
More information, Brno, Czech Republic, EU
STRUCTURAL STABILITY OF PLASMA SPRAYED THERMAL BARRIER COATINGS AFTER ISOTHERMAL EXPOSURE AT 1050 C David JECH a,b, Ladislav ČELKO a.b, Lenka KLAKURKOVÁ a,b, Simona HUTAŘOVÁ a,b, Martin JULIŠ a,b, Jiří
More informationLiquid Feedstock Plasma Spraying - an Emerging Process for Advanced Thermal Barrier Coatings
Liquid Feedstock Plasma Spraying - an Emerging Process for Advanced Thermal Barrier Coatings N. Markocsan, M. Gupta, S. Joshi, P. Nylén Univ. West, Trollhättan, Sweden Xin-Hai Li - Siemens Industrial Turbomachinery,
More informationSegmented 8% YSZ thermal barrier coating solutions using cascaded arc gun technology
Segmented 8% YSZ thermal barrier coating solutions using cascaded arc gun technology Robust thermal protection for the hot section of gas turbine engines continues to develop as engine thermal efficiency
More information4th Annual International Conference on Material Science and Engineering (ICMSE 2016)
Effect of thermal Gradient on the Thermomechanical Fatigue Behavior of Thermal Barrier Coating System Feng HUANG 1,a, Zhong-Jiao ZHOU 2,b,*, Xu HUA 3,c, Guo-Feng CHEN 3,d, Xiao- Zhou ZHOU 4,e 1 Guangdong
More informationGAS TURBINE LOW CONDUCTIVITY THERMAL BARRIER COATING VALIDATION AND DEMONSTRATION
GAS TURBINE LOW CONDUCTIVITY THERMAL BARRIER COATING VALIDATION AND DEMONSTRATION John Scheibel Electric Power Research Institute Palo Alto, CA, USA Shane Elbel Cincinnati Thermal Spray Inc. Rocky Point,
More informationISSN : Experimental analysis of thermal and thermo-physical behavior of 7Y-PSZ as thermal barrier coating over A336 alloy substrate
Volume 12 Issue 2 ISSN : 0974-7486 MSAIJ, 12(2), 2015 [036-045] Experimental analysis of thermal and thermo-physical behavior of 7Y-PSZ as thermal barrier coating over A336 alloy substrate A.K.Saini Department
More informationAnalysis of Bending Stresses On Coating Materials by Experimental and FE Method
Analysis of Bending Stresses On Coating Materials by Experimental and FE Method Umesh G 1, Biradar Mallikarjun 2, Dr. C.S.Ramesh 3 1 Student, IV th Semester M.Tech.(Machine Design), 2 Associate Professor,
More informationFailure Mechanism Analysis and Life Prediction based on. Atmospheric Plasma-Sprayed and Electron Beam-Physical Vapor
Failure Mechanism Analysis and Life Prediction based on Atmospheric Plasma-Sprayed and Electron Beam-Physical Vapor Deposition Thermal Barrier Coatings Bochun Zhang A thesis submitted to the Faculty of
More informationMicrostructure and Properties of MoB/CoCr Cermet Coatings Fabricated by LPPS
Australian Journal of Basic and Applied Sciences, 3(3): 2989-2994, 2009 ISSN 1991-8178 Microstructure and Properties of MoB/CoCr Cermet Coatings Fabricated by LPPS CHEN Xiao, ZHANG RenYuan, Li Feng Faculty
More informationHot corrosion behaviour of new candidates for thermal barrier coatings application in turbine simulated environments
Louisiana State University LSU Digital Commons LSU Doctoral Dissertations Graduate School 2014 Hot corrosion behaviour of new candidates for thermal barrier coatings application in turbine simulated environments
More informationInfluence of Spraying Conditions on Properties of Zr-Based Metallic Glass Coating by Gas Tunnel Type Plasma Spraying
Influence of Spraying Conditions on Properties of Zr-Based Metallic Glass by Gas Tunnel Type Plasma Spraying KOBAYASHI Akira *, KURODA Toshio *, KIMURA Hisamichi ** and INOUE Akihisa ** Abstract Metallic
More informationMicrostructure of as-coated thermal barrier coatings with varying lifetimes
Surface and Coatings Technology 177 178 (2004) 89 96 Microstructure of as-coated thermal barrier coatings with varying lifetimes a a b b, A.J. Burns, R. Subramanian, B.W. Kempshall, Y.H. Sohn * a Siemens-Westinghouse
More informationA Review of the Erosion of Thermal Barrier Coatings
Journal of Physics D: Applied Physics, 2007, 40, No. 16, R293-R305 A Review of the Erosion of Thermal Barrier Coatings R. G Wellman and J. R. Nicholls ABSTRACT Cranfield University, Cranfield, Bedford,
More informationExperimental O 3. Results and discussion
Introduction Surface coatings to protect against oxidation extend the service temperature and the service life of basic metals. The commercially used coating systems can be divided into three main groups:
More informationEffect of Sintering on Thermal Conductivity and Thermal Barrier Effects of Thermal Barrier Coatings
Chinese Journal of Aeronautics 25 (2012) 811-816 Contents lists available at ScienceDirect Chinese Journal of Aeronautics journal homepage: www.elsevier.com/locate/cja Effect of Sintering on Thermal Conductivity
More informationDurability Testing of Ceramic Coatings for Indirect Resistance Heat Treating in Vehicle Lightweighting Applications
Durability Testing of Ceramic Coatings for Indirect Resistance Heat Treating in Vehicle Lightweighting Applications Warren Peterson and Jerry E. Gould EWI Abstract The need for vehicle lightweighting has
More informationDec 3, Comparison of APS, SPS and EB-PVD YSZ coating characteristics for advanced thermal barrier coatings
Comparison of APS, SPS and EB-PVD YSZ coating characteristics for advanced thermal barrier coatings Brian W. Callen 1, Mitchell Dorfman 2, Jing Liu 2, Alex McLane 2, Riston Roccio- Heller 2,Scott Wilson
More informationStructure Control of Plasma Sprayed Zircon Coating by Substrate Preheating and Post Heat Treatment
Materials Transactions, Vol. 46, No. 3 (25) pp. 669 to 674 #25 Japan Thermal Spraying Society Structure Control of Plasma Sprayed Zircon Coating by Substrate Preheating and Post Heat Treatment Masato Suzuki,
More informationDamage Evaluation of Yttria Stabilised Zirconia (YSZ) Thermal Barrier Coatings
More info about this article: http://www.ndt.net/?id=21192 Abstract: Damage Evaluation of Yttria Stabilised Zirconia (YSZ) Thermal Barrier Coatings B.B. Jha 1, R.K. Satpathy 2, T.K. Sahoo 1 & R. Sahoo
More informationCyclic and Isothermal Oxidation Resistance of ASPS Thermal Barrier Coating Systems
Cyclic and Isothermal Oxidation Resistance of ASPS Thermal Barrier Coating Systems by Xiaolong Li A thesis submitted to the Faculty of Graduate and Postdoctoral Affairs in partial fulfillment of the requirements
More informationHigh Temperature Sintering and Oxidation Behavior in Plasma Sprayed TBCs [Single Splat Studies] Paper 1 Role of Heat Treatment Variations
Journal of Surface Engineered Materials and Advanced Technology, 2013, 3, 106-115 http://dx.doi.org/10.4236/jsemat.2013.31a015 Published Online February 2013 (http://www.scirp.org/journal/jsemat) High
More informationINVESTIGATION OF MICROSTRUCTURES OF PLASMA AND HVOF SPRAYED CARBIDE COATINGS
Powder Metallurgy Progress, Vol.7 (2007), No 1 52 INVESTIGATION OF MICROSTRUCTURES OF PLASMA AND HVOF SPRAYED CARBIDE COATINGS J. Trpčevská, W. Žorawski, D. Jakubéczyová, J. Briančin, E. Zdravecká Abstract
More informationEffect of grit blasting and intermediate layer of MoSi2 on Life time of thermal barrier coating
Effect of grit blasting and intermediate layer of MoSi2 on Life time of thermal barrier coating Mujeebulla Khan Guttal 1 *, Dr.Abdul Sharief 2 1stjit, Ranebennur, Karbataka, India. 2P A College of Engineering
More informationSintering and Deformation Mechanisms in Plasma-Sprayed 7 wt.% Y 2 O 3 -ZrO 2 Thermal Barrier Coatings
Sintering and Deformation Mechanisms in Plasma-Sprayed 7 wt.% Y 2 O 3 -ZrO 2 Graeme Dickinson John Levin* Christophe Deschaseaux Rod Trice, Ph.D. School of Materials Engineering Purdue University October
More informationUniversity of Central Florida. Srinivas Vishweswaraiah University of Central Florida. Masters Thesis (Open Access) Electronic Theses and Dissertations
University of Central Florida Electronic Theses and Dissertations Masters Thesis (Open Access) Non-destructive Microstructural Evaluation Of Yttria Stabilized Zirconia, Nickel Aluminides And Thermal Barrier
More informationCharacterisation of APS TBC system during isothermal oxidation at 1100 C
Archives of Materials Science and Engineering Volume 28 Issue 12 December 2007 Pages 757-764 International Scientific Journal published monthly as the organ of the Committee of Materials Science of the
More informationCeramic Processing Research
Journal of Ceramic Processing Research. Vol. 12, No. 2, pp. 126~131 (2011) J O U R N A L O F Ceramic Processing Research Characterization of 3YSZ/LaPO 4 composites coatings made by an atmospheric plasma
More informationCrack Morphology in a Columnar Thermal Barrier Coating System
Crack Morphology in a Columnar Thermal Barrier Coating System Anne Dennstedt, Fabrice Gaslain, Marion Bartsch, Vincent Guipont, Vincent Maurel Centre des Matériaux - Mines ParisTech - CNRS UMR 7633 - PSL
More informationAvailable online at ScienceDirect. Procedia Materials Science 5 (2014 ) 11 20
Available online at www.sciencedirect.com ScienceDirect Procedia Materials Science 5 (2014 ) 11 20 International Conference on Advances in Manufacturing and Materials Engineering, AMME 2014 Oxidation Resistance
More informationImprovement of the Oxidation Resistance of CoNiCrAlY Bond Coats Sprayed by High Velocity Oxygen-Fuel onto Nickel Superalloy Substrate
Coatings 2011, 1, 3-16; doi:10.3390/coatings1010003 OPEN ACCESS coatings ISSN 2079-6412 www.mdpi.com/journal/coatings/ Article Improvement of the Oxidation Resistance of CoNiCrAlY Bond Coats Sprayed by
More informationFunctionally Graded Thermal Barrier Composite Coatings Formed by Gas Tunnel Type Plasma Spraying
Functionally Graded Thermal Barrier Composite Coatings Formed by Gas Tunnel Type Plasma Spraying Akira KOBAYASHI JWRI, Osaka University 11-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan Email: kobayasi@jwri.osaka-u.ac.jp
More informationAnalysis of Surface Properties of Al 2 O 3 Coating over Mild Steel Using Plasma Spray Process
Analysis of Surface Properties of Al 2 O 3 Coating over Mild Steel Using Plasma Spray Process I Arul raj 1, S Ramachandran 2 Research scholar, Faculty of Mechanical Engineering, Sathyabama University,
More informationFabrication and thermal properties of Al 2 TiO 5 /Al 2 O 3 composites
Materials Science-Poland, Vol. 28, No. 3, 2010 Fabrication and thermal properties of Al 2 TiO 5 /Al 2 O 3 composites M. LI, F. CHEN, Q. SHEN *, L. ZHANG State Key Lab of Advanced Technology for Materials
More informationADVANCED THERMAL BARRIER COATING SYSTEMS FOR THE ATS ENGINE
ADVANCED THERMAL BARRIER COATING SYSTEMS FOR THE ATS ENGINE Ramesh Subramanian, Stephen M. Sabol, John Goedjen and Maria Arana Siemens Westinghouse Power Corporation 4400 Alafaya Trail Orlando FL 32826
More informationDRY SLIDING WEAR PERFORMANCE OF THERMAL SPRAYED MICRO- NANO BORON CARBIDE COATING ON 410 GRADE STEEL
DRY SLIDING WEAR PERFORMANCE OF THERMAL SPRAYED MICRO- NANO BORON CARBIDE COATING ON 410 GRADE STEEL K. V. Sreenivas Rao, Girisha K. G. and Anil K. C. Akash R&D Center, Department of Mechanical Engineering,
More informationChemical reactivity of oxide materials with uranium and uranium trichloride
Korean J. Chem. Eng., 27(6), 1786-1790 (2010) DOI: 10.1007/s11814-010-0410-5 INVITED REVIEW PAPER Chemical reactivity of oxide materials with uranium and uranium trichloride Sung Ho Lee, Choon Ho Cho,
More informationApplications. - APS coatings -
Applications - APS coatings - Applications of APS coatings Typical spray materials Oxide ceramics: Cr 2 O 3, Al 2 O 3, Al 2 O 3 /TiO 2 Compounds: Ni/C G, AlSi/Polyester, [WC/Co(Cr), Cr 3 C 2 /NiCr] Metals:
More informationTHE PROPERTIES OF DIFFERENT BARRIER COATINGS
6th International DAAAM Baltic Conference INDUSTRIAL ENGINEERING 24-26 April 2008, Tallinn, Estonia THE PROPERTIES OF DIFFERENT BARRIER COATINGS Toomas Pihl, Vello Vainola, Riina Pihl Abstract: Nowadays
More informationErosion, Corrosion and Erosion-Corrosion of EB PVD Thermal Barrier Coatings
Erosion, Corrosion and Erosion-Corrosion of EB PVD Thermal Barrier Coatings R.G Wellman and J.R Nicholls School of Industrial and Manufacturing Science Cranfield University, Bedford, MK 43 OAL, UK. Electron
More informationHigh temperature stability of yttria-stabilized zirconia thermal barrier coating on. niobium alloy -- C-103. Telangana, India
High temperature stability of yttria-stabilized zirconia thermal barrier coating on niobium alloy -- C-103 S. S. Panwar 1,2, T. Umasankar Patro 2, K. Balasubramanian 2, B. Venkataraman 3 1 Defence Research
More informationEvaluating deformation behavior of a TBC-System during thermal gradient mechanical fatigue by means of high energy X-ray diffraction
Engineering Conferences International ECI Digital Archives Thermal Barrier Coatings IV Proceedings Summer 6-26-2014 Evaluating deformation behavior of a TBC-System during thermal gradient mechanical fatigue
More informationMECHANICAL AND WEAR BEHAVIOUR OF TITANIA PLASMA-SPRAYED COATINGS
MECHANICAL AND WEAR BEHAVIOUR OF TITANIA PLASMA-SPRAYED COATINGS A. Koutsomichalis 1, N.M. Vaxevanidis 2, A. Vencl 3, P. Psyllaki 4 1. Hellenic Air-Force Academy, Faculty of Aerospace Studies, 190 05 Dekelia
More informationMaterial Product Data Sheet Tungsten Carbide Nickel Chromium Self-Fluxing Powders
Material Product Data Sheet Tungsten Carbide Nickel Chromium Self-Fluxing Powders Thermal Spray Powder Products: Metco 31C-NS, Metco 32C, Metco 34F, Metco 34FP, Metco 36C, WOKA 7701, WOKA 7702, WOKA 7703,
More informationExamination of tribological properties of oxide-polymer and carbide-polymer coatings formed by flame, plasma and HVOF spray processes
Examination of tribological properties of oxide-polymer and carbide-polymer coatings formed by flame, plasma and HVOF spray processes R. Samur 1, H. Demirer 2 1 Department of Metallurgy, Faculty of Technical
More informationTOPPCOAT. TOwards design and Processing of advanced, competitive thermal barrier COATing systems. EU joint project. Aerodays2011
EU joint project TOPPCOAT TOwards design and Processing of advanced, competitive thermal barrier COATing systems Aerodays2011 Matthias Karger, Robert Vaßen IEK-1, Forschungszentrum Jülich GmbH 1 Outline
More informationMIKROSTRUCTURAL CHANGES OF AIR PLASMA SPRAYED CoNiCrAlY COATING AFTER REMELTING
MIKROSTRUCTURAL CHANGES OF AIR PLASMA SPRAYED CoNiCrAlY COATING AFTER REMELTING Veronika ŘIČÁNKOVÁ a, Ladislav ČELKO a,b, Lenka KLAKURKOVÁ a,b, Jiří ŠVEJCAR a,b a Brno University of Technology (BUT), Faculty
More informationNumerical investigation of damage protective oxide mechanisms in thermal barrier system for aeronautical turbine blade
16 JOURNAL OF MATERIALS AND ENGINEERING STRUCTURES 2 (2015) 16 25 Research Paper Numerical investigation of damage protective oxide mechanisms in thermal barrier system for aeronautical turbine blade Hocine
More informationThermal Barrier Coatings for the 21st Century
Thermal Barrier Coatings for the 21st Century M. J. Stiger, N. M. Yanar, M. G. Topping, F. S. Pettit, and G. H. Meier Department of Materials Science and Engineering University of Pittsburgh Pittsburgh,
More informationDevelopment of a Co-Cr-Mo to Tantalum Transition using LENS for Orthopedic Applications
Development of a Co-Cr-Mo to Tantalum Transition using LENS for Orthopedic Applications Abstract Saripella Surya Kumar, IIT Bombay Brent Stucker, Utah State University Biomedical implant material research
More informationTHERMAL RESISTANCE AND PHASE TRANSITIONS STUDIES FOR SOME COMPOSITE MATERIALS BASED ON Al 20 3
Vol. 96 (1999) ACTA PHYSICA POLONICA A No. 2 Proceedings of the III Int. School and Symposium on Physics in Materials Science, Jaszowiec '98 THERMAL RESISTANCE AND PHASE TRANSITIONS STUDIES FOR SOME COMPOSITE
More informationZYBF. High Temperature Yttria Stabilized Zirconia Fibers. Advanced Fibrous Ceramics
Advanced Fibrous Ceramics ZYBF High Temperature Yttria Stabilized Zirconia Fibers The Unrivaled Industry Leader of ZrO 2 Insulation Three Product Types ZYBF-1 (7.5 pcf) ZYBF-2 (21 pcf) ZYBF-5 (16 pcf)
More informationThe Effect of Nickel Ion on the Morphology and Adhesion Properties of Zinc Phosphate Coating
The Effect of Nickel Ion on the Morphology and Adhesion Properties of Zinc Phosphate Coating H Zarei 1 and R Hosseini Rad 2* 1 Graduate Center, Department of Materials Engineering, Shahid Sattari Aeronautical
More informationCORROSION PROPERTIES OF CERMET COATINGS SPRAYED BY HIGH-VELOCITY OXYGEN-FUEL. Dragos UŢU, Iosif HULKA, Viorel-Aurel ŞERBAN, Hannelore FILIPESCU
Abstract CORROSION PROPERTIES OF CERMET COATINGS SPRAYED BY HIGH-VELOCITY OXYGEN-FUEL Dragos UŢU, Iosif HULKA, Viorel-Aurel ŞERBAN, Hannelore FILIPESCU Politehnica University of Timisoara, Romania, dragosutu@yahoo.com,
More informationSelf-Healing Thermal Barrier Coatings. Advanced Materials December 12 th, Presenter: Marcel van Wonderen
Self-Healing Thermal Barrier Coatings Advanced Materials December 12 th, 2012 Presenter: Marcel van Wonderen Organisation: KLM Engineering & Maintenance Project: Technical University - Delft Dr. Ir. Wim.
More informationSiO 5 COATING SYSTEM FOR CARBON/CARBON COMPOSITES
PERFORMANCES OF COATING SYSTEM FOR CARBON/CARBON COMPOSITES Masayuki Kondo, Yuzuru Ogura, and Tatsuo Morimoto Advanced Technology Research Center, Mitsubishi Heavy Industries, Ltd., 1-8-1, Sachiura, Kanazawa-ku,
More informationTHERMAL SHOCK BEHAVIOR OF MIXED COMPOSITE TOP COAT APS TBCs
www.ceramics-silikaty.cz Ceramics-Silikáty 62 (2), 200-209 (2018) doi: 10.13168/cs.2018.0013 THERMAL SHOCK BEHAVIOR OF MIXED COMPOSITE TOP COAT APS TBCs # A. ASHOFTEH*, M. MOSAVI MASHHADI*, A. AMADEH**
More informationOverview of Sulzer Metco Compressor and Turbine Abradable Technology
Overview of Sulzer Metco Compressor and Turbine Abradable Technology Scott Wilson 8th International Charles Parsons Turbine Conference 05 Sep 2011-08 Sep 2011, University of Portsmouth, Portsmouth, UK
More informationLiquid feedstock plasma spraying - An emerging process for the next generation aircraft engines
Aerospace Technology Congress 2016, Stockholm Session G. Aircraft and spacecraft technology X October 12 th, 2016 (11:30 AM to 12:00 PM) Liquid feedstock plasma spraying - An emerging process for the next
More informationEffects of DC plasma nitriding parameters on properties of DIN low alloy steel
2nd National Iranian Conference on Gas Hydrate (NICGH) S Semnan University Effects of DC plasma nitriding parameters on properties of DIN 1.2344 low alloy steel H. Khorsand a*, H. Aghajani b, N. Mohamadian
More informationCutting Tool Materials and Cutting Fluids. Dr. Mohammad Abuhaiba
Cutting Tool Materials and Cutting Fluids HomeWork #2 22.37 obtain data on the thermal properties of various commonly used cutting fluids. Identify those which are basically effective coolants and those
More informationZirconia and Nickel Based Thermal Barrier Coating
Zirconia and Nickel Based Barrier Coating Dharam Katyal UG Student, School of Mechanical and Building Sciences, Vellore Institute of Technology, Vellore, Tamil Nadu, India. ABSTRACT: This research project
More informationCHARACTARISTICS OF DAMAGE AND FRACTURE PROCESS OF SOLID OXIDE FUEL CELLS UNDER SIMULATED OPERATING CONDITIONS BY USING AE METHOD
CHARACTARISTICS OF DAMAGE AND FRACTURE PROCESS OF SOLID OXIDE FUEL CELLS UNDER SIMULATED OPERATING CONDITIONS BY USING AE METHOD KAZUHISA SATO 1), TOSHIYUKI HASHIDA 2), HIROO YUGAMI 3), KEIJI YASHIRO 1),
More informationThermo-Mechanical Analysis of Thermal Barrier Coating System Using Finite Element Method
International Journal of Engineering and Technical Research (IJETR) ISSN: 2321-0869, Volume-2, Issue-11, November 2014 Thermo-Mechanical Analysis of Thermal Barrier Coating System Using Finite Element
More information(12) United States Patent (10) Patent No.: US 6,314,720 B1. Holmes et al. (45) Date of Patent: Nov. 13, 2001
USOO631472OB1 (12) United States Patent (10) Patent No.: Holmes et al. (45) Date of Patent: Nov. 13, 2001 (54) ROCKET COMBUSTION CHAMBER (56) References Cited COATING U.S. PATENT DOCUMENTS (75) Inventors:
More informationCorrosion Resistance of Al 2 O 3 +ZrO 2 Composite Coatings Sprayed on Stainless Steel Substrates
Transactions of JWRI, Vol.34, (05), No.2 Corrosion Resistance of Al 2 O 3 +ZrO 2 Composite Coatings Sprayed on Stainless Steel Substrates ZHANG Jialiang * and KOBAYASHI Akira ** Abstract Composite thermal
More informationAlternative Methods of Yttria Deposition For Semiconductor Applications. Rajan Bamola Paul Robinson
Alternative Methods of Yttria Deposition For Semiconductor Applications Rajan Bamola Paul Robinson Origin of Productivity Losses in Etch Process Aggressive corrosive/erosive plasma used for etch Corrosion/erosion
More informationHigh Temperature Erosion-Corrosion behavior of HVAF- & HVOF-Sprayed Fe-based Coatings
High Temperature Erosion-Corrosion behavior of HVAF- & HVOF-Sprayed Fe-based Coatings Esmaeil Sadeghimeresht a, Sudharshan Raman b, Nicolaie Markocsan a, Shrikant Joshi a a Department of Engineering Science,
More informationApplication of EBSD method for the investigation of microstructure and crystallographic orientation in RE 2. Zr 2 O 7 TBC
IOP Conference Series: Materials Science and Engineering Application of EBSD method for the investigation of microstructure and crystallographic orientation in RE 2 Zr 2 O 7 TBC To cite this article: B
More informationPROCESS CONTROL OF THERMAL BARRIER COATING SYSTEM BY CURRENT VARIANT CHANGES TO ALTER THE MICROSTRUCTURAL AND MECHANICAL CHARACTERISTICS
Volume XI, Issue I, June 2015, Page 129 135 PROCESS CONTROL OF THERMAL BARRIER COATING SYSTEM BY CURRENT VARIANT CHANGES TO ALTER THE MICROSTRUCTURAL AND MECHANICAL CHARACTERISTICS A. Imran 1, S. Alam
More informationHIGH TEMPERATURE THERMOCYCLIC BEHAVIOUR OF A PREOXIDIZED NI-BASE SUPERALLOY 601 AND HVOF SPRAYED Ni-Cr-B-Si- AND CoNiCrAlY COATINGS
HIGH TEMPERATURE THERMOCYCLIC BEHAVIOUR OF A PREOXIDIZED NI-BASE SUPERALLOY 601 AND HVOF SPRAYED Ni-Cr-B-Si- AND CoNiCrAlY COATINGS Carsten STRÜBBE a, Viorel-Aurel SERBAN a, Gabriela MARGINEAN b, Waltraut
More informationApril 23, 2012 Comparison of stress behaviour in thermal barrier coatings using FE analyses
April 23, 2012 Comparison of stress behaviour in thermal barrier coatings using FE analyses Tobias Hansson Kristoffer Skogsberg BACHELOR S THESIS Mechanical Engineering, Product Development with Design
More information