Corrosion Behavior of 304LN Stainless Steel in High-Temperature Supercritical Carbon Dioxide: Oxidation and Carburization

IF 3.9 2区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Acta Metallurgica Sinica-English Letters Pub Date : 2025-06-16 DOI:10.1007/s40195-025-01889-z

Nanfu Li, Bin Wu, Jiazhen Wang, Ming Shu, Yusheng Zhang, Yifeng Li, Jianqiu Wang, En-Hou Han, Hongliang Ming

引用次数: 0

Abstract

The corrosion behavior of 304LN austenitic stainless steel in supercritical CO₂ at 650 °C was investigated. The results show that 304LN follows Wagner’s law kinetics, forming a protective oxide film consisting of SiO₂, (Cr, Mn)₃O₄, and Cr₂O₃ from the inner to outer layers. A shallow carburization depth of approximately 130 nm indicates excellent resistance to carburization. The roles of key elements in 18/8 austenitic stainless steel represented by 304LN, such as Cr, Ni, and Si, were analyzed, highlighting their contributions to anti-carburization performance and corrosion resistance under harsh conditions.

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304LN不锈钢在高温超临界二氧化碳中的腐蚀行为：氧化和渗碳

研究了304LN奥氏体不锈钢在650℃超临界CO2中的腐蚀行为。结果表明：304LN遵循Wagner动力学定律，由内到外形成由SiO2、（Cr, Mn）3O4和Cr2O3组成的氧化保护膜；约130 nm的浅渗碳深度显示出优异的抗渗碳能力。分析了以304LN为代表的18/8奥氏体不锈钢中Cr、Ni、Si等关键元素的作用，强调了它们对抗渗碳性能和恶劣条件下耐腐蚀性能的贡献。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acta Metallurgica Sinica-English Letters METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

6.60

自引率

14.30%

发文量

122

审稿时长

2 months

期刊介绍： This international journal presents compact reports of significant, original and timely research reflecting progress in metallurgy, materials science and engineering, including materials physics, physical metallurgy, and process metallurgy.