Microbiologically influenced corrosion of 304L stainless steel caused by an alga associated bacterium Halomonas titanicae

被引：13

作者：

Yuqiao Dong ^{[1
,2
]}

Yassir Lekbach ^{[1
,3
]}

Zhong Li ^{[1
]}

Dake Xu ^{[1
]}

Soumya El Abed ^{[3
]}

Saad Ibnsouda Koraichi ^{[3
]}

Fuhui Wang ^{[1
]}

机构：

[1] Shenyang National Laboratory for Materials Science, Northeastern University

[2] Center for Marine Materials Corrosion and Protection, College of Materials, Xiamen University

[3] Laboratory of Microbial Biotechnology, Faculty of Science and Technology, Sidi Mohamed Ben Abdellah University

来源：

Journal of Materials Science & Technology | 2020年 / 37卷 / 02期

关键词：

Microbiologically influenced corrosion; Halomonas titanicae; Pitting corrosion;

D O I：

暂无

中图分类号：

TG172.7 [有机物腐蚀];

学科分类号：

080503 ;

摘要：

Algae are reported to be corrosive, while little is known about the role of the algae associated bacteria in the corrosion process. In the present study, Halomonas titanicae was isolated from a culture of an alga strain, Spirulina platensis, and identified through 16 S rRNA gene analysis. Corrosion behavior of 304L stainless steel(SS) coupons in the presence and absence of H. titanicae was characterized by using electrochemical measurements and surface analysis. The results showed that H. titanicae significantly accelerated the corrosion rate and decreased the pitting potential of 304L SS in the biotic medium.After removal of the corrosion products and biofilms, severe pitting corrosion caused by H. titanicae was observed. The largest pit depth after 14 d reached 6.6 μm, which was 5.5 times higher than that of the sterile control(1.2 μm). This is the first report revealing that an alga associated bacterium can induce microbiologically influenced corrosion(MIC), and a further concern is raised that whether algae play a role in the MIC process.

引用

页码：200 / 206

页数：7