Evolution of the Zr-Cr eutectic structure and its effect on the oxidation mechanism of Cr-coated Zr alloy at 1350 °C

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces Pub Date : 2025-03-12 DOI:10.1016/j.surfin.2025.106221

Shuai Wang, Baiming Yao, Weidong Zhai, Ziyi Li, Jishen Jiang, Xianfeng Ma

引用次数: 0

Abstract

The formation, evolution, and inward migration of the Zr-Cr eutectic structure and its influence on the oxidation behavior of the Cr-coated Zr alloy at 1350 °C were investigated. The lath-shaped eutectic structure was initially formed at the interface after oxidation for 120 s, followed by slow inward migration. After oxidation beyond 180 s, the coating lost its protection and the eutectic structure transformed from lath-shaped into dendrite-shaped. The migration distance of the Zr-Cr eutectic liquid exhibited parabolic-like distribution and was approximately equivalent to the combined thickness of the ZrO₂ and α-Zr(O) layers. The eutectic reaction aggravated the consumption and uneven thickness of the Cr coating, thereby reducing its overall protective performance.

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来源期刊

Surfaces and Interfaces Chemistry-General Chemistry

CiteScore

8.50

自引率

6.50%

发文量

753

审稿时长

35 days

期刊介绍： The aim of the journal is to provide a respectful outlet for ''sound science'' papers in all research areas on surfaces and interfaces. We define sound science papers as papers that describe new and well-executed research, but that do not necessarily provide brand new insights or are merely a description of research results. Surfaces and Interfaces publishes research papers in all fields of surface science which may not always find the right home on first submission to our Elsevier sister journals (Applied Surface, Surface and Coatings Technology, Thin Solid Films)