原位合成TiB2颗粒增强ZL203基复合材料的摩擦磨损性能

摘要

In suit TiB2 patticles were synthetized by mixing salt reactive process to prepare ZL203 composite. The dry friction and wear behavior of the composites under different loading conditions was investigated. The results show that the TiB2 particles in composite distributed uniformly, their average size was about 500 nm. Compared with matrix material, the mechanical properties and wear resistance of the composites increased obviously, and the occurrence of serious wear under the condition of large load was prolonged. A compact mechanical mixture layer was deformed on the friction surface of the composite, and it had good protection to composite.%采用混合盐反应法原位合成TiB2颗粒制备了ZL203基复合材料，研究了不同载荷条件下复合材料的干摩擦磨损行为。结果表明：该复合材料中的TiB2颗粒分布较均匀，平均尺寸约为500nm与基体材料相比，复合材料的力学性能和耐磨性明显提高，延缓了高载荷条件下严重磨损的发生，复合材料摩擦表面形成了一层致密的机械混合层，对复合材料具有很好的保护作用。