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采用超音速等离子喷涂和超音速火焰喷涂分别制备了WC-10Co4Cr金属陶瓷涂层,表征和分析了WC-10Co4Cr涂层的物相组成、微观组织结构,进行了硬度、孔隙率、结合强度及560和1120 r/min下的磨损对比试验。结果表明,超音速等离子喷涂制备的涂层的综合性能与超音速火焰喷涂制备的涂层性能相当。在560 r/min下磨损10 h,超音速等离子喷涂制备的涂层与基体的磨损量比为1∶122.15,超音速火焰喷涂制备的涂层与基体的磨损量比为1∶138.36,涂层的磨损机制主要表现为磨粒磨损。在1120 r/min下磨损10 h,超音速等离子喷涂制备的涂层与基体的磨损量比为1∶109.53,超音速火焰喷涂制备的涂层与基体的磨损量比为1∶127.44,涂层的磨损机制主要表现为磨粒磨损和疲劳磨损。
WC-10Co4Cr cermet coating was prepared by supersonic plasma spraying and supersonic flame spraying. The phase composition and microstructure of the WC-10Co4Cr coating were characterized and analyzed. The hardness, porosity, bonding strength and WC- And wear comparison test at 1120 r / min. The results show that the overall performance of the coatings prepared by supersonic plasma spraying is comparable to that of the coatings prepared by supersonic flame spraying. At 560 r / min for 10 h, the wear ratio of the coating prepared by supersonic plasma spraying to the matrix was 1:122.15. The wear ratio of the coating prepared by supersonic flame spraying to the matrix was 1:138.36. The coating The wear mechanism is mainly abrasive wear. At 1120 r / min for 10 h, the wear ratio of the coating prepared by supersonic plasma spraying to the substrate is 1:109.53. The wear ratio of the coating prepared by supersonic flame spraying to the substrate is 1:127.44. The wear mechanism is mainly abrasive wear and fatigue wear.