High entropy alloy (HEA) coatings for tribological applications - a review

IF 7.9 Q1 ENGINEERING, MULTIDISCIPLINARY

Results in Engineering Pub Date : 2025-06-13 DOI:10.1016/j.rineng.2025.105695

S Sabarinath , Vighnesh Raj , Lakshmi V. Nair , Vinoy Thomas , Nasirudeen Ogunlakin , Viswanathan S. Saji

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Abstract

High entropy alloy (HEA) coatings have garnered significant attention owing to their outstanding mechanical and tribological properties, as well as their resistance to high-temperature oxidation. These coatings consist of multiple principal elements, distributed in roughly equal atomic percentages. This characteristic makes them well-suited as coating materials for extreme operational conditions. This review delves into the realm of tribological thermal barrier coatings (TBCs), providing an account of fundamental principles and recent advancements in the context of HEA coatings. The review commences by elucidating the intricacies of substrates and coating parameters, detailing the properties of the substrate that influence coating performance. A focal point is then established on HEA coatings, with an overview of major processing techniques and a thorough examination of microstructural features and mechanical properties and how they influence friction and wear characteristics.

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高熵合金（HEA）涂层摩擦学研究进展

高熵合金（HEA）涂层因其优异的机械和摩擦学性能以及耐高温氧化性而受到广泛关注。这些涂层由多种主要元素组成，以大致相等的原子百分比分布。这种特性使它们非常适合作为极端操作条件下的涂层材料。本文综述了摩擦学热障涂层（tbc）的研究领域，介绍了HEA涂层的基本原理和最新进展。本文首先阐述了基材和涂层参数的复杂性，详细介绍了影响涂层性能的基材特性。然后重点介绍HEA涂层，概述主要加工技术，全面检查微观结构特征和机械性能，以及它们如何影响摩擦和磨损特性。

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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