Fe-Cr-B 铸钢上的热浸镀铝层与熔融 ZnCl2 盐之间的反应

IF 1.6 4区 材料科学 Q2 Materials Science
Xianman Zhang, Qi Hu, Zhenhai Zheng
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引用次数: 0

摘要

MoAlB MAB 相与熔融 ZnCl2 盐反应形成了可转移的 Mo2AlB2 MAB 相。我们在以前的工作中首次发现,在对 Fe-Cr-B 铸钢进行热浸镀铝和随后的热扩散处理过程中,在固体(Cr, Fe)2B/熔融铝界面上形成了周期性层状结构(PLS)。本文首次研究了原位形成的 PLS(尤其是 PLS 中包含的 Cr-Al-B MAB 相)与熔融 ZnCl2 盐之间的相互作用。PLS 与熔融 ZnCl2 之间发生了复杂的反应。特别是,熔融 ZnCl2 盐中的 Zn2+ 可通过 A 位置换反应部分占据 PLS 所含 Cr-Al-B MAB 相中 Al 原子的位置。该化学反应为Cr3AlB4(s) + ZnCl2(l) → Cr3(Al, Zn)B4(s) + Zn(l) + AlCl3(g)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Reaction Between Hot-Dip Aluminized Coating on Fe–Cr–B Cast Steel and Molten ZnCl2 Salt

Reaction Between Hot-Dip Aluminized Coating on Fe–Cr–B Cast Steel and Molten ZnCl2 Salt

The reaction between MoAlB MAB phase and molten ZnCl2 salt resulted in the formation of metastable Mo2AlB2 MAB phase. In our previous work, it was first discovered by us that the periodic layered structure (PLS) was formed at the solid (Cr, Fe)2B/molten Al interface during hot-dip aluminizing and subsequent thermal diffusion treatment of Fe–Cr–B cast steel. The interaction between PLS form in situ, especially the Cr–Al–B MAB phase contained in the PLS, and molten ZnCl2 salt was studied for the first time in this work. There were complex reactions between the PLS and molten ZnCl2. Specially, the Zn2+ in the molten ZnCl2 salt could partially occupy the positions of Al atoms in the Cr–Al–B MAB phase contained in the PLS through the A-site replacement reaction. The topochemical reaction was: Cr3AlB4(s) + ZnCl2(l) → Cr3(Al, Zn)B4(s) + Zn(l) + AlCl3(g).

Graphical Abstract

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来源期刊
Transactions of The Indian Institute of Metals
Transactions of The Indian Institute of Metals Materials Science-Metals and Alloys
CiteScore
2.60
自引率
6.20%
发文量
3
期刊介绍: Transactions of the Indian Institute of Metals publishes original research articles and reviews on ferrous and non-ferrous process metallurgy, structural and functional materials development, physical, chemical and mechanical metallurgy, welding science and technology, metal forming, particulate technologies, surface engineering, characterization of materials, thermodynamics and kinetics, materials modelling and other allied branches of Metallurgy and Materials Engineering. Transactions of the Indian Institute of Metals also serves as a forum for rapid publication of recent advances in all the branches of Metallurgy and Materials Engineering. The technical content of the journal is scrutinized by the Editorial Board composed of experts from various disciplines of Metallurgy and Materials Engineering. Editorial Advisory Board provides valuable advice on technical matters related to the publication of Transactions.
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