Microbiologically influenced corrosion of 304 stainless steel by halophilic archaea Natronorubrum tibetense

作     者：Hongchang Qian Lingwei Ma Dawei Zhang Ziyu Li Luyao Huang Yuntian Lou Cuiwei Du Hongchang Qian;Lingwei Ma;Dawei Zhang;Ziyu Li;Luyao Huang;Yuntian Lou;Cuiwei Du

作者机构：Beijing Advanced Innovation Center for Materials Genome EngineeringInstitute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing100083China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2020年第42卷第11期

页      面：12-20页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0817[工学-化学工程与技术] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：the Beijing Nova Program(No.Z171100001117076) the National Natural Science Foundation of China(Nos.51871026,51771029) the National Environmental Corrosion Platform。 

主　　题：Stainless Steel Archaea Microbiological influenced corrosion 

摘      要：The corrosion behavior of 304 stainless steel(SS)in the presence of aerobic halophilic archaea Natronorubrum tibetense was investigated.After 14 days of immersion,no obvious pitting pit was observed on the SS surface in the sterile medium.By contrast,the SS exhibited serious pitting corrosion with the largest pit depth of 5.0μm in the inoculated medium after 14 days.The results of electrochemical tests showed that the barrier property of the passive film decreased faster in the inoculated medium.The X-ray photoelectron spectroscopy results indicated that the detrimental Fe2+and Cr6+increased in the passive film under the influence of archaea N.tibetense,which resulted in the accelerated deterioration of passive film and promoted the pitting corrosion.Combined with the energy starvation tests,the microbiologically influenced corrosion mechanism of 304 SS caused by halophilic archaea N.tibetense was discussed finally.