The microstructure, phase composition, and microhardness of the cast high-entropy VNb₂TaCrMoW alloy with the addition of titanium diboride were studied. The initial VNb₂TaCrMoW alloy consisted of two bcc solid solutions, slightly differing in lattice parameters (a = 0.3139 nm and 0.3200 nm). The addition of boron as titanium diboride and repeated remelting led to a bcc solid solution with a larger lattice parameter (a = 0.3217 nm) and a boride with W_3.5Fe_2.5B₄ structure (a = 0.6054 nm and c = 0.3256 nm). The bcc solid solution was the first to crystallize, and the boride was part of the eutectic grains and precipitated from the last melt portions, forming a closed network. The resulting alloy was applied to a carbon steel substrate as a coating using electrospark deposition employing an Elitron-24A installation with varying electrical pulse energy. Higher pulse energy during coating deposition increased the layer thickness and surface roughness but did not influence the phase composition. The microstructure of the coatings was more uniform compared to the cast alloys, and X-ray diffraction showed that the coatings contained bcc solid solutions, Fe₇W₆ intermetallic compound, and a small amount of TaO₂ oxide. The coatings had a hardness of about 10 GPa and were 11–15 μm and 16–20 μm thick at discharge energies of 0.52 and 1.1 J, respectively. A comparative analysis of the phase composition, hardness, and microstructure of the cast alloy and associated coatings was carried out. The coatings deposited at a discharge energy of 0.52 J were subjected to laser processing. Laser processing of the coatings resulted in a thermally affected zone, while the surface layer hardness hardly changed. The wear resistance of the coatings deposited at a discharge energy of 0.52 J was analyzed. Wear resistance testing was conducted for three counterface materials (VK6, Al₂O₃, and Si₃N₄) in quasistatic and dynamic loading modes. Laser processing of the electrospark coatings changed the wear mechanism and significantly increased the wear resistance regardless of the counterface material and loading mode.

研究了添加二硼化钛的铸造高熵VNb _{2 TaCrMoW合金的显微组织、相组成和显微硬度。}最初的VNb ₂ TaCrMoW 合金由两种bcc 固溶体组成，其晶格参数略有不同（a = 0.3139 nm 和0.3200 nm）。以二硼化钛的形式添加硼并反复重熔，得到具有较大晶格参数（ a = 0.3217 nm）的bcc固溶体和具有W _3.5 Fe _2.5 B ₄结构的硼化物（a = 0.6054 nm和c = 0.3256 nm）。bcc固溶体最先结晶，硼化物是共晶晶粒的一部分，从最后熔化的部分析出，形成封闭的网络。使用具有不同电脉冲能量的 Elitron-24A 装置，使用电火花沉积将所得合金作为涂层施加到碳钢基材上。涂层沉积期间较高的脉冲能量增加了层厚度和表面粗糙度，但不影响相组成。与铸造合金相比，涂层的显微组织更加均匀，X射线衍射表明涂层含有bcc固溶体、Fe ₇ W ₆金属间化合物和少量TaO ₂氧化物。在放电能量为 0.52 和 1.1 J 时，涂层的硬度约为 10 GPa，厚度分别为 11-15 μm 和 16-20 μm。对铸造合金和相关涂层的相组成、硬度和微观结构进行了比较分析。对以0.52J放电能量沉积的涂层进行激光加工。激光加工涂层会产生热影响区，而表层硬度几乎没有变化。分析了在0.52 J放电能量下沉积的涂层的耐磨性。在准静态和动态加载模式下对三种配合面材料（VK6、Al ₂ O ₃和Si ₃ N ₄ ）进行了耐磨性测试。电火花涂层的激光加工改变了磨损机制并显着提高了耐磨性，无论配合面材料和加载模式如何。