本发明提供了一种镍包钛碳化硅复合涂层的制备方法,包括：向Ni60-38WC复合粉末中添加固体润滑剂镍包钛碳化硅(25Ni-Ti-3SiC-2)粉末进行混合以获得所需喷涂粉末,其中镍包钛碳化硅粉末的添加量为5％～15％(质量分数),然后采用低温超音速火焰喷涂技术(HVAF)在45钢基体上制备复合涂层。本发明提供的方法制备的复合涂层结构致密,与基体结合良好,具有优异的耐磨损性能。本发明还提供了一种复合粉末及其制备方法和复合涂层及其应用。

The present invention provides a method for the preparation of nickel-clad titanium silicon carbide composite coating, including: adding solid lubricant nickel-clad titanium silicon carbide (25Ni-Ti-3SiC-2) powder to Ni60-38WC composite powder for mixing to obtain the required spraying powder, wherein the addition amount of nickel-clad titanium silicon carbide powder is 5%-15% (mass fraction), and then using low-temperature supersonic flame spraying technology (HVAF) on the 45 steel substrate to prepare a composite coating. The composite coating prepared by the method provided by the present invention has a dense structure and good bonding with the substrate, and has excellent wear resistance. The present invention also provides a composite powder and its preparation method and composite coating and its application.