Synergistic effect of chloride ion and Shewanella algae accelerates the corrosion of Ti-6Al-4V alloy

被引：57

作者：

Li, Zhong ^{[1
,3
]}

Wang, Jie ^{[1
,3
]}

Dong, Yizhe ^{[1
,3
]}

Xu, Dake ^{[1
,3
]}

Zhang, Xianhui ^{[2
,4
]}

Wu, Jianhua ^{[2
,4
]}

Gu, Tingyue ^{[5
]}

Wang, Fuhui ^{[1
,3
]}

机构：

[1] Northeastern Univ, Shenyang Natl Lab Mat Sci, Shenyang 110819, Peoples R China

[2] Fujian Prov Key Lab Naval Architecture & Marine E, Xiamen 361021, Peoples R China

[3] Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China

[4] Jimei Univ, Sch Marine Engn, Xiamen 361021, Peoples R China

[5] Ohio Univ, Inst Corros & Multiphase Technol, Dept Chem & Biomol Engn, Athens, OH 45701 USA

来源：

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2021年 / 71卷

基金：

中国国家自然科学基金;

关键词：

Titanium alloy; Microbiologically influenced corrosion; Chloride ions; Biofilm; Passive film; MICROBIOLOGICALLY INFLUENCED CORROSION; DUPLEX STAINLESS-STEEL; ELECTROCHEMICAL-BEHAVIOR; MARINE; TITANIUM; SULFATE; OIL; PH; DISSOLUTION; COATINGS;

D O I：

10.1016/j.jmst.2020.07.022

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

increasing utilization of titanium alloys in marine environments makes their microbiologically influenced corrosion study a timely matter. This work demonstrated that the corrosion of Ti-6Al-4 V alloy was accelerated by a marine bacterium Shewanella algae in 2216E medium with different Cl- level. Various electrochemical, pitting morphology and passive film analyses demonstrated that S. algae weakened the passive film, which made Cl- more aggressive. The synergy of those two factors caused considerable corrosion acceleration of the titanium alloy, leading to a maximum pit depth of 3.2 mu m and corrosion current density of 26.5 nA cm(-2) in 2216E medium with 3.50 % (w/w) Cl-. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

引用

页码：177 / 185

页数：9

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