Characterizations of the biomineralization film caused by marine Pseudomonas stutzeri and its mechanistic effects on X80 pipeline steel corrosion

作     者：Haixian Liu Wen Chen Yu Tan Guozhe Meng Hongfang Liu YFrank Cheng Hongwei Liu Haixian Liu;Wen Chen;Yu Tan;Guozhe Meng;Hongfang Liu;YFrank Cheng;Hongwei Liu

作者机构：School of Chemical Engineering and TechnologySun Yat-sen UniversityZhuhai 519082China Research Institute of Natural Gas TechnologySouthwest Oil&Gasfield CompanyChina National Petroleum CorporationChengdu 610000China Department of Mechanical and Manufacturing EngineeringUniversity of CalgaryCalgaryAlberta T2N 1N4Canada Key Laboratory for Large-Format Battery Materials and SystemMinistry of EducationHubei Key Laboratory of Materials Chemistry and Service FailureSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074China 

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

年 卷 期：2022年第125卷第30期

页      面：15-28页

核心收录：

学科分类：080706[工学-化工过程机械] 08[工学] 0806[工学-冶金工程] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(No.51901253) Fundamental Research Funds for the Central Universities(No.19lgzd18) Guangdong Basic and Applied Basic Research Foundation(No.2019A1515011135) the Open Project Program of Beijing Key Laboratory of Pipeline Critical Technology and Equipment for Deepwater Oil&Gas Development(No.BIPT201904) the Open Project Program of Hubei Key Laboratory of Materials Chemistry and Service Failure(No.2020MCF02)。 

主　　题：Biomineralization Nanomaterials MIC Pseudomonas stutzeri Steel 

摘      要：Microbiologically influenced corrosion(MIC)of steel generates a corrosion product film,which can also be called biomineralization film.It is critical to understand the structure of biomineralization film since it dominates the corrosion behavior of metal.In this work,Pseudomonas stutzeri(P.stutzeri)was isolated from seawater,and the biomineralization film caused by marine P.stutzeri was characterized by Transmission electron microscopy(TEM),scanning electron microscopy(SEM),X-ray diffraction(XRD),etc.The mechanistic effects of the biomineralization film on X80 pipeline steel corrosion were also investigated.The results indicate that the minerals are mainly composed of nano FeOand FeOOH,according to TEM and XRD results.The particle sizes of biominerals are below 10 nm.This work also provides an insight strategy to prepare nanomaterials by MIC caused by P.stutzeri.In addition,P.stutzeri can grow well with COas a carbon source and iron as an electron donor.The corrosion rates(CRs)of specimens are closely related to the structure of biomineralization film.The CRs increase with the decrease of initial cell concentration.P.stutzeri with an initial concentration of 10~7 cells/mL can promote the formation of a compact biomineralization film with a thickness of 145.8±4.8μm,leading to corrosion inhibition with a CR of 0.058±0.008 mm/y.But some corrosion pits can be observed due to the formation of small anodes.Electrochemical impedance spectroscopy(EIS)data show higher impedance values and two time-constants,which imply the formation of a compact biomineralization film.