通过电沉积获得的铁钴镍铬和铁钴镍铬瓦高熵合金镀层的微观结构和性能

IF 4.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics Pub Date : 2024-09-16 DOI:10.1016/j.intermet.2024.108492

Meiling Dong, Pengwei Liu, Chaohui Wang, Yuhui Wang, Xinyao Tang, Mingxin He, Jiaqi Liu

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引用次数: 0

摘要

通过电沉积法成功获得了由单一固溶体组成的铁钴镍铬和铁钴镍铬钨高熵合金镀层。研究了两种涂层的微观结构、显微硬度、磨损性能和腐蚀行为。结果表明，这两种涂层都由非晶相组成，组成元素以金属及其氧化物的形式存在。与铁钴镍铬涂层相比，铁钴镍铬钨涂层因溶液强化而表现出更优异的机械性能。具体来说，FeCoNiCrW 涂层的显微硬度比 FeCoNiCr 涂层高 35.9%，磨损痕迹的宽度比 FeCoNiCr 涂层小 8.3%。然而，由于铁钴镍铬钨涂层较薄，在磨损过程中会被磨掉，因此其粘着磨损比铁钴镍铬涂层更为严重。与 304 不锈钢和 FeCoNiCr 镀层相比，FeCoNiCrW 镀层在 3.5% 的 NaCl 溶液中具有最高的耐腐蚀性和最低的腐蚀率，这归功于形成了一层高度稳定和耐腐蚀的被动膜。

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Microstructure and properties of FeCoNiCr and FeCoNiCrW high entropy alloy coatings by electro-deposition

The FeCoNiCr and FeCoNiCrW high-entropy alloy coatings, comprising a single solid solution, were successfully obtained by electro-deposition. The microstructure, microhardness, wear properties and corrosion behaviors of both coatings were investigated. The results revealed that both coatings consisted of amorphous phases and the component elements existed as metals and their oxides. Compared with the FeCoNiCr coating, the FeCoNiCrW coating exhibited superior mechanical properties attributed to solution strengthening. Specifically, the microhardness of the FeCoNiCrW coating was 35.9 % higher, and the width of the worn tracks was 8.3 % smaller than those of the FeCoNiCr coating. However, the FeCoNiCrW coating showed more serious adhesive wear than that of FeCoNiCr coating due to its thinner coating which was worn out during wear. The FeCoNiCrW coating has the highest corrosion resistance and the lowest corrosion rate compared to 304 stainless steel and FeCoNiCr coating in 3.5 % NaCl solution, attributed to the formation of a highly stable and resistant passive film.

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来源期刊

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.