1. 1 : TG : A , ACUSOL445N,APG,OCTA,OS-15. , cm cm cm, Vol. 9 No. 4 Nov EL ECTROCHEMISTR Y

Transcription

1 EL ECTROCHEMISTR Y Vol 9 No 4 Nov 2003 : (2003) , 3,, (, ) :,,,,,APG,OCTA, OCTA : ; ; : TG : A, [11 ] [2 ] [3 5 ], [6 ],,, ACUSOL445N,APG,OCTA,OS-15 [7 11 ] :1 10 cm 0 90 cm 0 50 cm, 320, # 4 #,,, 4 00 cm 1 90 cm 0 70 cm 0 30 cm : , : , Tel : (86-532) E- mail ouc edu cn 2002 (JO2C52)

2 4 : Tab 1 The composition of mild steel 907 Element C Mn Si S P Ni Cr Cu Ti Fe Content/ % Rem 1 2 ( ), ( ), ( ), ( ), ( ), ( STPP, ), (ACUSOL445N, ), APG(,C0810),OCTA ( ),OS-15 ( ),, ) :, 3 2) : IM6e ( ) [5 ], (100 mg L - 1 ) (200mg L - 1 ), No 7 (, OCTA IE98 63 %) OCTA 3 ( ) 3 ( ) :100 mg L - 1,200 mg L - 1,300 mg L - 1, L 9 (3 4 ) L 9 (3 4 ) 3, 4 ( 3) L 9 (3 4 ), EXCEL ORIGIN 3, R A > R B > R C, R B R C R A,, OCTA, R D 0 96, 0, R A R B R C, A > A > A, 300 mg/ L ;

3 Tab 2 The inhibition efficiency of corrosion inhibitors selected from experiment No Main salts/ (mg L - 1 ) Corrosion inhibitor Addictives/ (mg L - 1 ) IE/ % 1 Calcium Gluconate/ 100,Zinc Sulfate/ 200 Blank Sodium citrate/ Sodium metasilicate/ ACUSOL445N/ APG/ OS-15/ OCTA/ Sodium metasilicate/ 100 Sodium polyacrylate/ 100 APG/ 100 Garlic/ STPP/ STPP/ 100 Sodium citrate/ L 9 (3 4 ) Tab 3 The results of Latin experiment with L 9 (3 4 ) No Ca Gl (A) Zinc Sulfate(B) OCTA(C) Blank(D) IE/ % R Level : 1) 100 mg/ L, 2) 200 mg/ L, 3) 300 mg/ L

4 4 : 419 B > B > B, 20 mg/ L ; C > C > C, OCTA 200 mg/ L 3 : 300 mg L - 1, 200 mg L - 1 OCTA 200 mg L mg L mg L mg L - 1 OCTA,907 [12 ], Fig 1 Polarization curves of the mild steel 907 in seawater added single or compound inhibitors 2 4 Fig 2 Variation of inhibition efficiency with dipping time for the mild steel 907 dipped in seawater contained with in2 hibitors 2, (907 ), 6 h, 6 h 24 h,

5 h 3 1), OCTA 3, 2) 3 : 300 mg L - 1, 200 mg L - 1 OC2 TA 200 mg L - 1 3),OCTA,3 4) 907 The Study of Green Corrosion Inhibitors for Mild Steel 907 in Natural Seawater Environment GON G Ping,DU Min 3,WAN G Qing-zhang,MU Zhen-jun ( College of Chemist ry and Chemical Engineering Ocean U niversity of China, Qingdao , China) Abstract : Nine green compounds,including calcium gluconate,zinc gluconate,zinc sulfate,gar2 lic,acusol 445N,OS-15,APG,OCTA and STPP were selected according to the methods of molecule design and f unction groups prune The f unctions of combined corrosion inhibitors mixed by the compounds mentioned above for mild steel in seawater were studied in this work using the met hods of polarization curve and weight-loss The best weight ratio and distinct synergistic effect of calcium gluconate,zinc sulfate and OCTA were st udied by Latin experiment The afgereffect s of the best weight ratio corrosoin inhibitor were studied by subsection experiment In this way, a kind of high effect green corrosion inhibitor was obtained Key words : Mild steel, Corrosion inhibitor, Seawater Reference s : [1 ] Zheng Jia- sheng,huang Kui-yuan Review and prospect of corrosion inhibitor development [J ] Materials Pro2 tection,2000,33(5) :11 15 [2 ] Wei Gang,Xiong Rong-chun Green chemistry and perspectives on corrosion protection[j ] Corrosion Science and Protection Technology,2001,13(1) :346

6 4 : 421 [3 ] Xu Shou-chang The Technology of Industrial Water Disposal [ M ] Beijing : Chemical Industry Press,1984 : [4 ] Mor ED,Wrubl W Zinc gluconate as an inhibitor of the corrosion of mild steel in sea water[j ] Br Corros, 1976,11 (4) : [5 ] Yang Zhao- hui,wang Qing-zhang Studies on corrosion inhibitors of mild steel in sea water [J ] Marine Sci2 ence,1998,(1) :62 64 [6 ] Gao Yan- min, Chen Jia-jian, Lei Liang-cai, et al Adsorption of organic molecule on metal surface and molec2 ular design of organic inhibitors[j ] Journal of Chinese Society for Corrosion and Protection,2000,20(3) : [7 ] Chen Shang- bing, Wang Jing- yun Structural analysis of lauroy-type corrosion inhibitors system and its effect evaluation[j ]Journal of Jianghan Petroleum Institute,1996,18(9) :26 29 [8 ] Fei Xiu-zhong, Zhang Yong- guang, Li Yong-chang The synthesis and evaluation of the novel surfactant APG[J ]Journal of China Institute of Metallurgy,1996,13(2) :23 25 [9 ] Latha, Rajeswari G Evalution of non-ionic surfactant as corrosion inhibitors in seawater [J ] Anti- Corrosion Methods Mater,1996,43(5) :19 23 [10 ] Shalaby M N,Osman M M,El Feky A A Effect of some organic surfactants on corrosion inhibition of steel in sea water[j ] Anti- Corrosion Methods and Materials,1999,46(4) : [11 ] Krast V H, Kadek S, Trusov N,et al The development,application and mechanism of corrosion inhibitors in neutral water environment [ D ] The Papers Collection of the 12th International Corrosion Conference, Petroleum Industry Publishing Company, 1993 [ 12 ] Cui Wei- han, Tang Meng-qi,Xu Chun-chun The Whole Practical Technology of Chinese Anti- Corrosion En2 gineers[ M ] Taiyuan : Shanxi Science and Technology Press,2001