The introduction of high-entropy alloys, notable for their increased hardness and thermal stability, gave impetus to the study of their properties in coatings. High-entropy metal coatings are characterized by high hardness, ranging from 7 to 19 GPa. The general laws governing the influence of various parameters on the mechanical properties of high-entropy metal coatings were analyzed. Single-layer metal, nitride, oxide, and carbide coatings and multilayer nitride coatings from high-entropy alloys produced by different deposition techniques were examined. The phase composition, structure, hardness, elastic modulus, and friction coefficient of the coatings were determined. The mechanical properties of high-entropy coatings, along with those of cast alloys, depend on the lattice parameter. With increase in the lattice parameter in bcc metal coatings, the elastic modulus and hardness decrease. The increased hardness of vacuum high-entropy coatings contributes to decrease in their friction coefficient compared to the cast state. The influence of pressure in the sputtering chamber and the voltage applied to the substrate on properties of the nitride coatings was established. The capabilities of producing thick (up to 80 μm) coatings combining metal and nitride interlayers from high-entropy alloys and determining their properties were shown. For the high-entropy carbide in the TiZrNbVTaHf system, the influence of the lattice parameter on hardness was revealed. The lowest friction coefficient (0.05) was observed in high-entropy oxide coatings. The high-entropy coatings showed high hardness. A hardness level of 19 GPa was reached for a metal coating based on the TiZrNbTaHfCr alloy, 63 GPa for a nitride coating based on the TiZrNbVHf alloy, and 48 GPa for a carbide coating based on the TiZrNbVHfTa alloy. The analysis showed that nitride coatings were the hardest, while the lowest friction coefficient was possessed by oxide coatings.

高熵合金的引入以其硬度和热稳定性的提高而著称，推动了对其涂层性能的研究。高熵金属涂层的特点是硬度高，范围为7至19 GPa。分析了各参数对高熵金属涂层力学性能影响的一般规律。研究了通过不同沉积技术生产的高熵合金的单层金属、氮化物、氧化物和碳化物涂层以及多层氮化物涂层。测定了涂层的相组成、结构、硬度、弹性模量和摩擦系数。高熵涂层以及铸造合金的机械性能取决于晶格参数。随着bcc金属涂层晶格参数的增加，弹性模量和硬度降低。与铸造状态相比，真空高熵涂层硬度的增加有助于降低其摩擦系数。确定了溅射室中的压力和施加到基材上的电压对氮化物涂层性能的影响。展示了利用高熵合金生产结合金属和氮化物中间层的厚涂层（高达 80 μm）并确定其性能的能力。对于TiZrNbVTaHf系高熵碳化物，揭示了晶格参数对硬度的影响。在高熵氧化物涂层中观察到最低的摩擦系数（0.05）。高熵涂层表现出高硬度。基于TiZrNbTaHfCr合金的金属涂层的硬度水平达到19GPa，基于TiZrNbVHf合金的氮化物涂层的硬度水平达到63GPa，基于TiZrNbVHfTa合金的碳化物涂层的硬度水平达到48GPa。分析表明，氮化物涂层最硬，而氧化物涂层摩擦系数最低。