Passivation behavior and surface chemistry of Fe-based amorphous coating in NaCl solution: Influence of applied potential and immersion time

IF 4.3 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Intermetallics Pub Date : 2024-06-29 DOI:10.1016/j.intermet.2024.108391
Shuai Cui , Haimin Zhai , Wei Tong , Wensheng Li , Xuqiang Li , Xiangjuan Fan , Dangsheng Xiong
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Abstract

The influence of the potential for film formation and immersion time on the corrosion resistance of the passive film formed on Fe-based amorphous coating was thoroughly investigated. The semiconducting properties and chemical composition of the passive films were analyzed employing Mott-Schottky and XPS techniques. Results indicate that the stability of the film diminished as the potentials and immersion periods increased. The structural properties and chemical composition of film played a crucial role in the corrosion resistance of the coating in a chloride electrolyte. The accumulation of cation vacancies and the formation of metal chlorides increased the likelihood of film rupture, ultimately leading to pitting.

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NaCl溶液中铁基无定形涂层的钝化行为和表面化学性质:外加电位和浸泡时间的影响
深入研究了成膜电位和浸泡时间对在铁基非晶涂层上形成的无源膜的耐腐蚀性的影响。采用 Mott-Schottky 和 XPS 技术分析了被动膜的半导体特性和化学成分。结果表明,薄膜的稳定性随着电位和浸泡时间的增加而降低。薄膜的结构特性和化学成分对涂层在氯化物电解液中的耐腐蚀性起着至关重要的作用。阳离子空位的积累和金属氯化物的形成增加了薄膜破裂的可能性,最终导致点蚀。
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来源期刊
Intermetallics
Intermetallics 工程技术-材料科学:综合
CiteScore
7.80
自引率
9.10%
发文量
291
审稿时长
37 days
期刊介绍: This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys. The journal reports the science and engineering of metallic materials in the following aspects: Theories and experiments which address the relationship between property and structure in all length scales. Physical modeling and numerical simulations which provide a comprehensive understanding of experimental observations. Stimulated methodologies to characterize the structure and chemistry of materials that correlate the properties. Technological applications resulting from the understanding of property-structure relationship in materials. Novel and cutting-edge results warranting rapid communication. The journal also publishes special issues on selected topics and overviews by invitation only.
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