Qiyin Zhou , Jianye Chen , Huigang Shi , Lefu Zhang , Yanping Huang , Gen Zhang , Yongfu Zhao , Xianglong Guo
{"title":"Mechanisms of defect-promoted oxidation and carburization in austenitic stainless steels and the beneficial role of Al on defect elimination","authors":"Qiyin Zhou , Jianye Chen , Huigang Shi , Lefu Zhang , Yanping Huang , Gen Zhang , Yongfu Zhao , Xianglong Guo","doi":"10.1016/j.corsci.2025.112755","DOIUrl":null,"url":null,"abstract":"<div><div>A systematic study was conducted on an alumina-forming austenitic (AFA) stainless steel exposed to 650°C/15 MPa supercritical carbon dioxide. Results show that AFA exhibits superior corrosion resistance compared with its austenitic stainless steel (ASS) counterpart. The Cr<sub>2</sub>O<sub>3</sub> film in ASS exhibits numerous defects, attributed to the counter-diffusion of Cr<sup>3 +</sup> and O<sup>2-</sup> and the oxide growth stress. Through trace Al addition (∼2.5 wt%), a slowly growth Al<sub>2</sub>O<sub>3</sub>/ Cr<sub>2</sub>O<sub>3</sub> bilayer oxide film on AFA effectively prevents the formation of pores and cracks. High-resolution characterization and atomic modeling results demonstrate that defect-free oxide films exhibit exceptional protective properties against both oxidation and carburization.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"246 ","pages":"Article 112755"},"PeriodicalIF":7.4000,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Corrosion Science","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0010938X25000824","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/30 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
A systematic study was conducted on an alumina-forming austenitic (AFA) stainless steel exposed to 650°C/15 MPa supercritical carbon dioxide. Results show that AFA exhibits superior corrosion resistance compared with its austenitic stainless steel (ASS) counterpart. The Cr2O3 film in ASS exhibits numerous defects, attributed to the counter-diffusion of Cr3 + and O2- and the oxide growth stress. Through trace Al addition (∼2.5 wt%), a slowly growth Al2O3/ Cr2O3 bilayer oxide film on AFA effectively prevents the formation of pores and cracks. High-resolution characterization and atomic modeling results demonstrate that defect-free oxide films exhibit exceptional protective properties against both oxidation and carburization.
期刊介绍：
Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies.
This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
