The AlCrN, CrBN and AlCrBN coatings were deposited on Ti6Al4V alloy by cathodic vacuum arc with powder-metallurgical targets. The phase structures, surface and cross-sectional microstructures, mechanical and tribological properties of these coated samples were comparatively studied. The results show that the B-containing coatings consist of fcc solid solution embedded into a-BN/CrB amorphous phases, whereas the AlCrN coating is composed of single-phase fcc-AlCrN solid solution. The preferred orientation is changed from (111) plane in CrBN coating to the (200) plane in the AlCrBN coating. As a result of complex effects of B-induced fine-grained strengthening and the Al/B solution strengthening, the AlCrBN coating shows the highest hardness and the best plastic deformation resistance. The results of wear tests reveal that all PVD coated samples show the better tribological properties compared to the uncoated Ti6Al4V alloy, and the highest wear resistance is observed in the AlCrBN coated sample. The main wear mechanism for coated samples is oxidation wear, whereas the one for the uncoated Ti6Al4V alloy is abrasive wear.

采用粉末冶金靶阴极真空电弧在Ti6Al4V合金上沉积AlCrN，CrBN和AlCrBN涂层。对这些涂层样品的相结构，表面和截面显微结构，力学和摩擦学性能进行了比较研究。结果表明，含B涂层由嵌入a-BN / CrB非晶相的fcc固溶体组成，而AlCrN涂层由单相fcc-AlCrN固溶体组成。优选的取向从CrBN涂层中的（111）面改变为AlCrBN涂层中的（200）面。由于B诱导的细晶粒强化和Al / B溶液强化的复杂作用，AlCrBN涂层具有最高的硬度和最佳的抗塑性变形性。磨损测试的结果表明，与未涂覆的Ti6Al4V合金相比，所有PVD涂覆的样品均表现出更好的摩擦学性能，并且在AlCrBN涂覆的样品中观察到了最高的耐磨性。涂层样品的主要磨损机理是氧化磨损，而未涂层的Ti6Al4V合金的磨损机理是磨料磨损。