Corrosion behavior of a Co−Cr−Mo−Si alloy in pure Al and Al−Si melt

IF 1.6 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

High Temperature Materials and Processes Pub Date : 2023-01-01 DOI:10.1515/htmp-2022-0278

K. Yamanaka, M. Mori, Kazuo Yoshida, P. Tunthawiroon, A. Chiba

引用次数: 2

Abstract

Abstract Metallic phase change materials (MPCMs) are attracting considerable attention for their application in thermal energy storage. Al–Si alloys are considered potential MPCMs; however, to develop storage systems/modules, it is crucial to fabricate corrosion-resistant materials for MPCMs. In this study, the corrosion behavior of Co−28Cr−6Mo−1.5Si (wt%) alloy was examined via immersion tests in commercial Al−Si alloy (ADC12) melt at 700°C for 10 h. The results were compared to those obtained for pure Al. Substrate thickness loss measurements revealed that the liquid metal corrosion was more severe in the Al−Si melt than that in pure Al, suggesting an increased reactivity due to Si addition. Interfacial analysis elucidated a direct reaction between the alloy substrate and molten Al in both cases. Furthermore, the formation of oxides such as Al2O3 and SiO2 did not contribute to corrosion resistance.

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Co−Cr−Mo−Si合金在纯Al和Al−Si熔体中的腐蚀行为

摘要金属相变材料因其在热能储存中的应用而备受关注。Al–Si合金被认为是潜在的MPCM；然而，要开发存储系统/模块，制造用于MPCM的耐腐蚀材料至关重要。在本研究中，通过在商用Al−Si合金（ADC12）熔体中700°C下浸泡10分钟的试验，研究了Co−28Cr−6Mo−1.5Si（wt%）合金的腐蚀行为 h.将结果与纯Al的结果进行了比较。衬底厚度损失测量表明，Al−Si熔体中的液态金属腐蚀比纯Al中的更严重，这表明由于Si的添加，反应性增加。界面分析阐明了在这两种情况下合金基体和熔融Al之间的直接反应。此外，诸如Al2O3和SiO2的氧化物的形成对耐腐蚀性没有贡献。

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

High Temperature Materials and Processes 工程技术-材料科学：综合

CiteScore

2.50

自引率

0.00%

发文量

审稿时长

3.9 months

期刊介绍： High Temperature Materials and Processes offers an international publication forum for new ideas, insights and results related to high-temperature materials and processes in science and technology. The journal publishes original research papers and short communications addressing topics at the forefront of high-temperature materials research including processing of various materials at high temperatures. Occasionally, reviews of a specific topic are included. The journal also publishes special issues featuring ongoing research programs as well as symposia of high-temperature materials and processes, and other related research activities. Emphasis is placed on the multi-disciplinary nature of high-temperature materials and processes for various materials in a variety of states. Such a nature of the journal will help readers who wish to become acquainted with related subjects by obtaining information of various aspects of high-temperature materials research. The increasing spread of information on these subjects will also help to shed light on relevant topics of high-temperature materials and processes outside of readers’ own core specialties.