(中航工业北京航空制造工程研究所 高能束流加工技术重点实验室，北京 100024)
摘 要: 在TC4-DT钛合金表面采用超音速火焰喷涂的方法制备WC10Co4Cr涂层，并评估涂层孔隙率、显微硬度、结合强度和抗微动磨损性能。结果表明：涂层孔隙率可以控制在1%以下，其显微硬度高达1 000 HV0.3，结合强度大于70 MPa，其点接触微动耐磨损性能是基体的30倍。
关键字: TC4-DT；超音速火焰喷涂；WC10Co4Cr涂层；微动磨损
（Science and Technology on Power Beam Processes Laboratory,
Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China）
Abstract:WC10Co4Cr coatings were prepared by high-velocity-oxygen-fuel spray process on TC4-DT alloy. The coating porosity, microhardness, bonding strength and anti fretting-wear performance of the coatings were evaluated. The results indicate that the porosity is less than 1%, the microhardness is more than 1100 HV0.3, the bonding strength is more than 70 MPa. And the anti fretting-wear performance of the coatings is about 30 times more than that of the substrate.
Key words: TC4-DT; high velocity oxygen fuel; WC10Co4Cr coatings; fretting wear
