Development of corrosion and fretting wear resistant AlCoCrFeNi high entropy alloy coatings prepared by electrodeposition using an aqueous electrolyte

IF 4.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics Pub Date : 2025-10-10 DOI:10.1016/j.intermet.2025.109021

Ashwin Shah , Mahesh Patel , Jayaparakash Murugesan , Rajesh Kumar Rai , Brij Mohan Mundotiya

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引用次数: 0

Abstract

This work aims to fabricate an AlCoCrFeNi high entropy alloy (HEA) coating on a Cu substrate utilizing a chloride-based aqueous electrolyte through electrodeposition. The corrosion and fretting wear behavior of the deposited HEA coating was examined. All the elements were co-deposited in near equiatomic composition, and the coating surface exhibited uniform globular morphology as indicated by scanning electron microscopy equipped with energy-dispersive X-ray spectroscopy. The deposited HEA coating possessed a single-phase FCC crystal structure. The deposited HEA coating exhibited higher corrosion resistance than the Cu substrate, with a corrosion protection efficiency of 65.34 % and a corrosion current density of 4.12 μA/cm². Furthermore, the fretting wear of the HEA coating decreased by about 43 %, and the friction coefficient was only 0.52 compared to 0.8 for the Cu-substrate. The wear rate of HEA coating was 9.37 x 10⁻⁴ mm³N⁻¹.m. The wear mechanism in HEA coating was characterized as primary abrasive and delamination wear with minor adhesive wear. The high corrosion resistance of the AlCoCrFeNi HEA coating was attributed to the formation of a stable passive oxides film on its surface, while high wear resistance was due to the high hardness of the coating.

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电沉积法制备耐腐蚀微动磨损高熵合金涂层的研究

本研究的目的是利用氯化物基水电解质通过电沉积在Cu衬底上制备AlCoCrFeNi高熵合金（HEA）涂层。研究了沉积HEA涂层的腐蚀和微动磨损性能。所有元素均以接近等原子的形式共沉积，通过扫描电子显微镜和能量色散x射线能谱分析表明，涂层表面呈现均匀的球状形貌。所制备的HEA涂层具有单相FCC晶体结构。沉积的HEA涂层比Cu基体具有更高的耐蚀性，其腐蚀防护效率为65.34%，腐蚀电流密度为4.12 μA/cm2。此外，HEA涂层的微动磨损降低了约43%，摩擦系数仅为0.52，而cu涂层的摩擦系数为0.8。HEA涂层的磨损率为9.37 × 10−4 mm3N−1 m。HEA涂层的磨损机制以初级磨粒磨损和分层磨损为主，并伴有少量黏着磨损。AlCoCrFeNi HEA涂层的高耐蚀性主要归功于其表面形成了稳定的钝化氧化物膜，而高耐磨性主要归功于涂层的高硬度。

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

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.