Understanding the Corrosion Behavior of P92 Steel in CO2 Using In-Situ Monitoring Technology II: Mechanism of Oxide Scale Peeling

IF 2.1 3区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Oxidation of Metals Pub Date : 2024-07-21 DOI:10.1007/s11085-024-10268-5

Tingshan Guo, Zhiyuan Liang, Qinxin Zhao

引用次数: 0

Abstract

The mechanism of oxide scale exfoliation from P92 steel during formation in CO₂ under over-temperature conditions at 650 ℃ was studied by the experiments, thermodynamics, and molecular dynamics. A duplex oxide scale with an inner FeCr₂O₄ scale and an outer Fe₃O₄ scale was formed on P92 steel, in which honeycomb pores were observed in Fe₃O₄ oxides. The honeycomb pore size and CO gas generation rate on P92 steel showed maximum values after 80 min. The exfoliation of Fe₃O₄ oxide scale was divided into two stages based on the deposition of carbon in the honeycomb pores.

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利用原位监测技术了解 P92 钢在二氧化碳中的腐蚀行为 II：氧化鳞片剥落机理

通过实验、热力学和分子动力学研究了在 650 ℃ 的过温条件下，P92 钢在二氧化碳中形成氧化鳞片剥离的机理。在 P92 钢上形成了内层为 FeCr2O4 鳞片、外层为 Fe3O4 鳞片的双相氧化物鳞片，其中在 Fe3O4 氧化物中观察到蜂窝状孔隙。P92 钢上的蜂窝状孔隙大小和 CO 气体生成率在 80 分钟后达到最大值。根据蜂窝孔中碳的沉积情况，Fe3O4 氧化物鳞片的剥离分为两个阶段。

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

Oxidation of Metals 工程技术-冶金工程

CiteScore

5.10

自引率

9.10%

发文量

审稿时长

2.2 months

期刊介绍： Oxidation of Metals is the premier source for the rapid dissemination of current research on all aspects of the science of gas-solid reactions at temperatures greater than about 400˚C, with primary focus on the high-temperature corrosion of bulk and coated systems. This authoritative bi-monthly publishes original scientific papers on kinetics, mechanisms, studies of scales from structural and morphological viewpoints, transport properties in scales, phase-boundary reactions, and much more. Articles may discuss both theoretical and experimental work related to gas-solid reactions at the surface or near-surface of a material exposed to elevated temperatures, including reactions with oxygen, nitrogen, sulfur, carbon and halogens. In addition, Oxidation of Metals publishes the results of frontier research concerned with deposit-induced attack. Review papers and short technical notes are encouraged.