摘要： 磷酸盐涂层具有优异的耐高温性能，为应用于高温机械设备防护，需保持其耐高温性能的同时提高涂层的耐磨性，本研究在磷酸盐涂层中引入 SiC和 Al₂O₃作为功能填料，制备了 SiC/Al₂O₃磷酸盐涂层。用扫描电镜、能谱仪、差示扫描量热仪、热重分析仪、显微硬度仪、高温摩擦磨损试验机等分析测试了磷酸盐涂层的聚合固化过程、微观结构、涂层热稳定性和摩擦磨损性能，研究了颜基比， SiC和 Al₂O₃的质量比，Al₂O₃的粒径、形貌和晶型对涂层摩擦磨损性能的影响，并获得最佳涂层合成条件。结果表明：涂层高温热稳定性优异；填料中组分选择适量的比例有助于涂层硬度和耐磨性的提高，填料具有球形的形貌可以降低磨损率，提高涂层耐磨性。

关键词: 磷酸盐涂层, SiC, Al₂O₃, 硬度, 耐高温, 摩擦系数

Abstract: Phosphate coating has excellent high-temperature resistance，and in order to be applied to protect the high-temperature mechanical equipment，the high-temperatureresistance should be maintained while improving the wear resistance. In this paper， SiC/Al₂O₃ phosphate coating was prepared by introducing silicon carbide（SiC）and alumina（Al₂O₃）as functional fillers. The polymerization and solidification process，microstructure， thermal stability，and friction wear performance of the prepared coating were analyzed through scanning electron microscopy，energy spectrometer，differential scanning calorimetry， thermogravimetry，microhardness，and high temperature friction and wear tester. The effects of the pigment binder ratio，SiC and Al₂O₃ addition ratio，and the particle size，morphology and crystal form of Al₂O₃ on the friction wear performance of the coating were investigated，and the optimal synthesis condition was obtained. The results showed that the coating had excellenthigh-temperature thermal stability，and the appropriate component proportion of in the fillercould improve the coating hardness and wear resistance. The spherical shape fillers couldreduce the wear rate and improve the wear resistance.

Key words: phosphate coating；SiC；Al₂O₃；hardness；high-temperature resistance； frictional coefficient 

中图分类号: 

• TQ637. 6