D. Jendrzejczyk-Handzlik a. W. Gierlotka a,b. K. Fitzner a
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1 COMPLEX MEASUREMENTS OF Au-Sb-Sn Sn SYSTEM D. Jendrzejczyk-Handzlik a W. Gierlotka a,b K. Fitzner a a AGH University of Science and Technology in Krakow, Faculty of Non-Ferrrous Metals, Mickiewicza Ave 30, Krakow, Poland b Yuan Ze University, Chemical Engineering and Material Science Department, 35 Yuan-Tung Road, Chung-Li, Taiwan, R.O.C. TOFA 2010, SEPTEMBER 12-16, PORTO, PORTUGAL
2 Isothermal section at 523 K by Schubert et al Vertical phase-diagram calculated along a constant amount of 64,5at%Au-Sb-Sn. Symbols represented experimental data by Kim et al
3 0.9 Sb RHOMBO_A K 7 K AUSB K 9 K 7 K SBSN 6 K SB2SN3 10 K 11 K 6 K 12 K FCC_A1 HCP_A3 AU1SN BCT_A5 AUSN2 5 K 13 K DHCP AUSN4 Au Sn Calculated liquidus projection of the ternary Au-Sn-Sb system by Kim et al Calculated liquidus projection of the ternary Au-Sn-Sb system from COST database TOFA 2010, September 12-16, Porto, Portugal
4 99 55 Sb Au Sn 11.0 Au Sn T[K] T[K] 70 0? n) 0..4 x(s n) x(s b) x(s b) x( 5 S Sb Sb 8 ] T[K] T [K Au x(sn) x(sn) Sn KRAKOW, 11 AGH UNIVERSITY OF SCIENCE AND TECHNOLOGY T[KT[K ] ]
5 Verification of information about Au-Sb-Sn systems: - DTA/DSC method - Calorimetric method - E.M.F. method TOFA 2010, September 12-16, Porto, Portugal
6 DTA/DSC method Sb Calorimetric method Sn 1:1 Au 1:1 Sn Au 2:1 1:2 Sb TOFA 2010, September, Porto, Portugal
7 Q6 from TA Instruments
8 6 weeks T=473 K Thermal analysis TOFA 2010, September 12-16, Porto, Portugal
9 No. T, 0 C Invariant reaction LIQUID + FCC -> AuSb 2 + Au 10 Sn LIQUID + (Sb) -> AuSn + AuSb LIQUID + (Sb) -> SbSn+ AuSn LIQUID + Au 10 Sn -> AuSb 2 + HCP LIQUID + AuSn -> SbSn+ AuSn LIQUID + AuSn 2 -> SbSn+ AuSn LIQUID + Sb 2 Sn 3 -> SbSn+ (Sn) LIQUID -> AuSn + AuSb 2 + HCP LIQUID + SbSn-> AuSn 4 + (Sn) Au-Sb-Sb System binary formalism Calculated from Database: cost531.tdb (ver. 3).
10 6 5 cooling heating cooling heating heating T, C X Sb TOFA 2010, September, Porto, Portugal
11 MHTC Calorimetre from Setaram TOFA 2010, September 12-16, Porto, Portugal
12 A X Sn H mix / (J*mol -1 ) B X Sn H mix / (J*mol -1 ) , , , , , , , , , , , , , , , , , , X Au /X Sb =1:2 0, , , , , , , , , , , , , , , , , , , ,
13 A X Sn H mix / (J*mol -1 ) B X Sn H mix / (J*mol -1 ) , , , , , , , , , , , , , , , , , , X Au /X Sb =2:1 0, , , , , , , , , , , , , , , , , , , ,
14 H mix /(J/mol) X Sn H mix /(J/mol) X Sn
15 x /(J/mol) H mix Au/Sb=1:2 Au/Sb=2:1 X Sn TOFA 2010, September, Porto, Portugal
16 Plans Re + kanthal, Au-Sn-Sb, SnO 2 //ZrO 2 + Y 2 O 3 //NiO, Ni, Pt ( I ) Sn gas inlet gas outlet Al2O3capillary quartz ampule quartz tube Pt - lead wire (kanthal + Re) lead wire resistance furnace solid YSZ solid electrolite electrolyte Al2O 3 - crucible reference electrode Ni, NiO working electrode Au 2:1 1:2 Sb TOFA 2010, September, Porto, Portugal
17 CONCLUSIONS 1. The literature survey indicates that the information concerning properties of the ternary system is still not satisfactory. 2. The results obtained from DTA/DSC measurements for only one cross-section suggest the discrepancy between the ternary phase diagram calculated from respective binaries and the real equilibrium state. 3. The results of calorimetric measurements conducted for ternary liquid alloys show negative deviation from the Raoult s Law but at this stage do not carry enough information to decide about the enthalpy temperature dependence. 4. In order to work out the ternary phase diagram it is necessary to carry out further investigations of this system. Namely, DTA/DSC measurements should be done for more cross-sections, and activities of components should be determined over wide temperature range. TOFA 2010, September 12-16, Porto, Portugal
18
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