Microbiological influenced corrosion resistance characteristics of a 304L-Cu stainless steel against Escherichia coli

被引：88

作者：

Nan, Li ^{[1
]}

Xu, Dake ^{[1
]}

Gu, Tingyue ^{[2
]}

Song, Xiu ^{[3
]}

Yang, Ke ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China

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

[3] Northeastern Univ, Sch Met & Mat, Key Lab Anisotropy & Texture Mat, Shenyang 110819, Peoples R China

来源：

MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS | 2015年 / 48卷

基金：

中国国家自然科学基金;

关键词：

304L stainless steel; MIC; Pitting corrosion; Copper; Antibacterial stainless steel; SULFATE-REDUCING BACTERIA; PITTING CORROSION; CARBON-STEEL; CU; 304-STAINLESS-STEEL; BEHAVIOR; BIOCORROSION; COMBINATION; MITIGATION; CHEMISTRY;

D O I：

10.1016/j.msec.2014.12.004

中图分类号：

TB3 [工程材料学]; R318.08 [生物材料学];

学科分类号：

0805 ; 080501 ; 080502 ;

摘要：

Cu-bearing antibacterial stainless steels have been gaining popularity in recent years due to their strong antibacterial performances. However, only a few studies were reported for their actual performances against microbiologically influenced corrosion (MIC). In this study, electrochemical methods and surface analytical techniques were applied to study the MIC resistance characteristics of a 304L-Cu stainless steel (SS) against Escherichia coli in comparison with 304L SS as control. Corrosion tests for specimens after a 21-day exposure to a Luria-Bertani (LB) culture medium with E. coli demonstrated that the 304L-Cu SS considerably reduced the maximum MIC pit depth and the specific weight loss compared with 304L SS (83 mu m and 02 mg/cm(2) vs. 13.4 mu m and 0.6 mg/cm(2)). Potentiodynamic polarization tests showed that the corrosion current density of the 304L-Cu SS was as much as 4 times lower than that of the 304L SS, indicating that the 304L-Cu SS is abetter choice for applications in MIC-prone environments. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：228 / 234

页数：7

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