Atomic scale in-situ TEM observation of the lattice strain enhanced-oxide film growth on stainless steel

IF 7.4 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Corrosion Science Pub Date : 2025-04-01 Epub Date: 2025-01-09 DOI:10.1016/j.corsci.2025.112698
Chunyi Han , Zhanbo Sun , Qin Zhang , Fanghai Xin , Zhaoyue Liu , Mingtian Li , Yangtao Zhou
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Abstract

The corrosion resistance of stainless steels exposed to humid environment is closely related to the surface oxide film. To date, the formation process and its correlation with the alloy defects are still unclear. The present study, using in-situ atomic-scale TEM characterization, reveals the growth process of oxide film on a fresh steel surface. The oxide formation involves the oxygen adsorption, the inward diffusion into alloy lattice, and the outward expansion of stable oxide film. The metal-oxide solid transformation is found to be promoted by the lattice strain of the alloy. The atomic structures of the oxides are imaged and analyzed.
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不锈钢晶格应变增强氧化膜生长的原子尺度原位透射电镜观察
不锈钢暴露在潮湿环境中的耐蚀性与表面氧化膜密切相关。迄今为止,合金缺陷的形成过程及其与合金缺陷的关系尚不清楚。本研究利用原位原子尺度的TEM表征,揭示了氧化膜在新鲜钢表面的生长过程。氧化物的形成包括氧的吸附、向合金晶格内扩散和稳定氧化膜的向外膨胀。发现合金的晶格应变促进了金属-氧化物的固相转变。对氧化物的原子结构进行了成像和分析。
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来源期刊
Corrosion Science
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.
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