|
|
|
| ELECTROCHEMICAL BEHAVIOR AND SURFACE COMPOSITION OF FERRITIC STAINLESS STEELS CONTAINING Cu AND Nb IN SULFURIC ACID SOLUTION |
| Guo Jajiu (Beijing University of Science and Techn ology;Chjna)Masahiro Seo Norio Sato (Hokkaido University;Japan) |
|
|
|
|
Abstract Electrochemical behavior and surface composition of ferritic stain- less steels containing Cu and Nb in 1.0 mol.din~(-3) sulfuric acid solution have been investigated to evaluate the effects of alloying elements Cu and Nb on the corrosion resistance of ferritic stainless steel.The ac- tive dissolution current density of copper added steel is suppressed significantly because of the surface enrichment of metallic copper. From the measurements of the reactivation potential by a cathodic potential sweep of the passivated steel,it is found that the copper addition has a detrimental effect on the passivity.On the other hand, the addition of niobium improved the passivity of ferritic stainless steel. Auger Spectroscopy revealed that the niobium existed in the inner layer of passive film.Therefore with both niobium and copper added,the ferritic stainless steel shows excellent corrosion resistance,because active disolution is decelerated by copper addition and because passive film is improved by niobium addition.
|
|
Received: 25 June 1990
|
Cite this article:
Guo Jajiu (Beijing University of Science and Techn ology;Chjna)Masahiro Seo Norio Sato (Hokkaido University;Japan). ELECTROCHEMICAL BEHAVIOR AND SURFACE COMPOSITION OF FERRITIC STAINLESS STEELS CONTAINING Cu AND Nb IN SULFURIC ACID SOLUTION. J Chin Soc Corr Pro, 1990, 10(3): 239-244.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1990/V10/I3/239
|
[1] 小林未子夫,秋山俊一郎,木谷滋,宇野秀树,小川一利,日本技报,No.18,59(1983)
[2] 足立俊郎,神余隆义,日新制钢技报,No.49,115(1983)
[3] 山本章夫,芦浦武夫,稻恒博已,制铁研究,316,64(1984)
[4] 过川茂男,第62回腐食防食资料,东京,1985,P12
[5] 安保秀雄,野口荣,林巨幸,上田全纪,防食技术,23． 303(1974)
[6] Yamamoto,A.;Ashiura,T.and Kamisaka,E.;Stainless Steels′84,Japan,181(1984)
[7] 过家驹,濑尾真浩,佐藤美贵,Gunnar Hultquist,Christofer Leygraf,佐藤教男;防食技术,35,283(1986)
[8] 山本章夫,芦浦武夫,神坂荣治,防食技术,35． 448(1986) |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
