Pitting corrosion initiated by SiO_(2)-MnO-Cr_(2)O_(3)-Al_(2)O_(3)-based inclusions in a 304 stainless steel
作者机构：School of Metallurgical and Ecological EngineeringUniversity of Science and Technology Beijing(USTB)Beijing100083China School of Mechanical EngineeringYanshan UniversityQinhuangdao066004HebeiChina Stainless Steel R&D Center of Central R&D InstituteBaoshan Iron and Steel Co.Ltd.Shanghai201900China School of Mechanical and Materials EngineeringNorth China University of TechnologyBeijing100144China
出 版 物：《Journal of Iron and Steel Research International》 (钢铁研究学报（英文版）)
年 卷 期：2024年第31卷第9期
页 面：2281-2293页
核心收录：
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：the National Natural Science Foundation of China(Grant No.U22A20171) the High Steel Center(HSC)at North China University of Technology,Yanshan University,and University of Science and Technology Beijing,China
主 题：Pitting corrosion 304 stainless steel Non-metallic inclusion First-principles calculation Galvanic corrosion
摘 要：The influence of the aluminum content on the pitting corrosion of a 304 stainless steel by a Cl−solution was *** number,area,and composition of non-metallic inclusions were modified by the addition of aluminum in the steel,which was responsible for the variation of the corrosion degree of the 304 stainless *** detection,corrosion test,electrochemical test,thermodynamic calculation,and first-principles calculation were performed to evaluate the pitting corrosion of the stainless *** initiation of the pitting corrosion by three types of inclusions,including(Mn,Si,Cr,S)O,(Mn,Al,Cr)O,and Al_(2)O_(3)were in-situ *** corroding for 880 min,the corrosion index of(Mn,Si,Cr,S)O,(Mn,Al,Cr)O,and Al_(2)O_(3)was 0.38%,0.02%,and 0.00%min−1,*** the increase in aluminum content in the steel,the pitting potential of the stainless steel was 0.131,0.304,and 0.338 V,respectively,indicating that a higher aluminum content in the steel was beneficial to improving the pitting corrosion resistance of the 304 stainless steel.
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