Mechanisms of defect-promoted oxidation and carburization in austenitic stainless steels and the beneficial role of Al on defect elimination

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2025-01-30 DOI:10.1016/j.corsci.2025.112755

Qiyin Zhou , Jianye Chen , Huigang Shi , Lefu Zhang , Yanping Huang , Gen Zhang , Yongfu Zhao , Xianglong Guo

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 Cr^3 + and O^2- 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.

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

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.