Chemical and structural durability of α-Al2O3 and γ-LiAlO2 layers formed on ODS FeCrAl alloys in liquid lithium lead stirred flow

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

Corrosion Science Pub Date : 2024-09-17 DOI:10.1016/j.corsci.2024.112459

Masatoshi Kondo , Susumu Hatakeyama , Naoko Oono-Hori , Yoshiki Kitamura , Kan Sakamoto , Teruya Tanaka , Yoshimitsu Hishinuma

引用次数: 0

Abstract

The protection performance of an α-Al₂O₃ layer formed on oxide dispersion-strengthened (ODS) FeCrAl alloys in liquid LiPb flow was investigated by means of the corrosion tests under stirred-flow condition at 873 K for 1000 h. The result of STEM/EELS analysis indicated the Li adsorption and diffusion into α-Al₂O₃ layer. The ODS FeCrAl alloys in-situ formed a durable γ-LiAlO₂ layer on their bare surface in liquid LiPb. The results of micro scratch tests on the protective layers indicated that they revealed strong resistance against the exfoliation in a shearing direction after the immersion to liquid LiPb.

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液态锂铅搅拌流中 ODS FeCrAl 合金上形成的 αAl2O3 和 γ-LiAlO2 层的化学和结构耐久性

在 873 K 的搅拌流动条件下，通过 1000 h 的腐蚀试验，研究了在液态锂铅流中氧化物分散强化（ODS）铁铬铝合金上形成的 αAl2O3 层的保护性能。STEM/EELS 分析结果表明，锂吸附并扩散到了α-Al2O3 层。在液态锂铅中，ODS 铁铬铝合金的裸表面原位形成了一层持久的 γ-LiAlO2 层。保护层的微划痕测试结果表明，它们在浸入液态锂铅后具有很强的抗剪切剥离能力。

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

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.