Role of protein in crevice corrosion of CoCrMo alloy: An investigation using wire beam electrodes

被引：14

作者：

Liu, Heng ^{[1
]}

Wang, Zening ^{[1
]}

Qiao, Lijie ^{[1
]}

Su, Yanjing ^{[1
]}

Yan, Yu ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing Adv Innovat Ctr Mat Genome Engn, Corros & Protect Ctr, Beijing 100083, Peoples R China

来源：

CORROSION SCIENCE | 2023年 / 215卷

基金：

中国国家自然科学基金;

关键词：

CoCrMo; Crevice corrosion; Wire beam electrode; Protein; Crevice width; FRETTING-CORROSION; ELECTROCHEMICAL CORROSION; LOCALIZED CORROSION; STAINLESS-STEELS; HIP; BEHAVIOR; DEBRIS; DAMAGE;

D O I：

10.1016/j.corsci.2023.111028

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, the effects of protein and crevice width on crevice corrosion of CoCrMo alloy were studied using wire beam electrodes. The results show that proteins inside and outside the crevice migrated to the crevice mouth, causing crevice mouth blockage and decreasing the Cl- concentration inside the crevice, which further affected the distribution and rate of corrosion. The accumulation of H+ inside the crevice promoted the occurrence of pitting corrosion, which led to crevice corrosion of CoCrMo alloy. The corrosion rate of the samples with 0.07 mm crevice width was 5 times greater than the samples without crevice.

引用

页数：10

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