The CoCrFeNi-based high-entropy alloy coatings were prepared by atmospheric plasma spraying. The microstructure, phase, microhardness and corrosion resistance of the coatings were characterized. The tribological properties of the coatings sliding against GCr15 balls under dry and oil-lubricated sliding conditions were investigated. The results show that the phase composition of the CoCrFeNiAl coating is mainly BCC phase, accompanied by a small amount of FCC phase and AlCrO₃ oxide phase. The oxide phase is mostly distributed at the splat interfaces, which leads to a low cohesive strength and high wear rate under both dry and oil-lubricated sliding conditions. The CoCrFeNiMn coating is composed of FCC phase and relatively large amount of MnCr₂O₄ oxide phase. High oxides content and good plastic deformation ability contribute to the formation of tribolayer on the worn surface, which promotes excellent wear resistance under both conditions. The CoCrFeNiMo_0.5 coating consists of mostly FCC phase and a bit of aggregated Cr₂FeO₄ oxide phase. Its dominant wear mechanism is abrasive wear.

通过大气等离子喷涂制备了CoCrFeNi基高熵合金涂层。表征了涂层的组织，相，显微硬度和耐蚀性。研究了在干和油润滑的滑动条件下，在GCr15球上滑动的涂层的摩擦学性能。结果表明，CoCrFeNiAl涂层的相组成主要为BCC相，伴有少量的FCC相和AlCrO ₃氧化物相。氧化物相主要分布在splat界面上，这导致在干燥和油润滑的滑动条件下均具有较低的内聚强度和较高的磨损率。CoCrFeNiMn涂层由FCC相和相对大量的MnCr ₂ O _4组成氧化物相。高氧化物含量和良好的塑性变形能力有助于在磨损表面上形成摩擦层，从而在两种情况下均具有出色的耐磨性。CoCrFeNiMo _0.5涂层主要由FCC相和一些聚集的Cr ₂ FeO ₄氧化物相组成。它的主要磨损机制是磨料磨损。