EFFECT OF ALLOYING ELEMENTS ON THE REPASSIVATION POTENTIALS FOR CREVICE CORROSION OF STAINLESS STEELS IN 3% NaCl SOLUTION.

被引：0

作者：

Okayama, Shin ^{[1
]}

Uesugi, Yasuji ^{[1
]}

Tsujikawa, Shigeo ^{[1
]}

机构：

[1] Univ of Tokyo, Tokyo, Jpn, Univ of Tokyo, Tokyo, Jpn

来源：

Boshoku gijutsu | 1987年 / 36卷 / 03期

关键词：

NITROGEN - SODIUM CHLORIDE - Corrosive Effects - STATISTICAL METHODS - Regression Analysis;

D O I：

10.3323/jcorr1974.36.3_157

中图分类号：

学科分类号：

摘要：

Repassivation potentials, E//R//,//C//R//E//V, for metal/metal crevices of 54 kinds of stainless steels were measured in 3%NaCl solution at 80 degree C. Obtained values are analyzed in relation to chemical compositions into multiple linear regressions for the steel groups which are alpha (ferritic, 15 steels), alpha plus gamma (duplex, 11 steels), gamma (austenitic, 18 steels with Cu less than 0. 4%) and gamma //C//u (austenitic, 8 steels with 0. 9 to approx. 3. 5%Cu). Beneficial effects of Mo are confirmed for all groups except the gamma //C//u steels containing 2-3% Cu, of which E//R//,//C//R//E//V values are kept constant independent of Mo contents. Addition of N up to 0. 2% was beneficial for the duplex steels, but not significant for the austenitic steels in spite of beneficial effects of N reported on pitting potentials.

引用

页码：157 / 167