利用 18O 示踪剂进行多氧化剂环境中的高温氧化研究

IF 2.1 3区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING Oxidation of Metals Pub Date : 2024-11-28 DOI:10.1007/s11085-024-10323-1

Juho Lehmusto, Anton Ievlev, James Kurley III, Bruce A. Pint

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引用次数: 0

摘要

本研究的目的是利用富含 18O 的水更好地了解 H2O 在高温氧化中的作用。水蒸气中的氧比空气中的氧更具活性，18O 富集在所形成的富铬和富铝氧化物的最外层。添加了 Al 和/或 Ti 的合金显示出内部氧化的迹象，但在合金内部氧化的位置，18O 并未富集。根据合金铝含量的不同，氧化物从铬鳞下面的铝氧化到外部氧化铝鳞的形成。

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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High-Temperature Oxidation Study in a Multi-Oxidant Environment Using 18O Tracer

The goal of this study was to use ¹⁸O-enriched water to better understand the role of H₂O in high-temperature oxidation. Seven model and three commercial M-Cr and M-Cr-Al alloys were studied in air with 10% of H₂O at 800 °C for 5 h. Oxygen from water vapor was more reactive than oxygen from the air and ¹⁸O enriched at the outermost layers of the formed Cr- and Al-rich oxides. Alloys with Al and/or Ti additions showed signs of internal oxidation but ¹⁸O was not enriched inside the alloy in locations with internal oxidation. Depending on the alloy Al content, the oxide went from Al oxidation beneath a chromia scale to external alumina scale formation.

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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.