Abstract In this study, AlCoCrFeNi high-entropy alloy (HEA) matrix coatings with Ag and BaF2/CaF2 eutectic were successfully fabricated by atmospheric plasma spray. Tribological properties of as-sprayed coatings at varying temperatures were investigated. The results revealed that lubricating phases were evenly distributed in the dense HEA matrix coatings with typical lamellar structures. The HEA coatings exhibited excellent wear-resistance, which was further improved with the increasing temperatures. The addition of Ag and BaF2/CaF2 eutectic alleviated the abrasion behavior and eminently decreased the wear rate by 10 times at room temperature. Meanwhile the lubricating additives changed oxidation products and inhibited the delamination of oxide layers at 800 °C.

中文翻译：

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一种新型常压等离子喷涂AlCoCrFeNi高熵合金基自润滑复合涂层的显微组织和摩擦学行为

摘要 在本研究中，采用常压等离子喷涂成功地制备了具有Ag和BaF2/CaF2共晶的AlCoCrFeNi高熵合金(HEA)基涂层。研究了喷涂涂层在不同温度下的摩擦学特性。结果表明，润滑相均匀分布在具有典型层状结构的致密 HEA 基体涂层中。HEA涂层表现出优异的耐磨性，并且随着温度的升高而进一步提高。Ag 和 BaF2/CaF2 共晶的加入减轻了磨损行为，并显着降低了室温下的磨损率 10 倍。同时润滑添加剂改变了氧化产物并抑制了800℃下氧化层的分层。