A359-Zr(CO3)2体系反应合成复合材料的组织及润滑磨损性哪

研究了新型反应体系A359-Zr（CO3）2熔体反应法制备的（Al3Zr＋Al2O3）p／A359复合材料边界油润滑条件下的滑动磨损性能。结果表明，由于颗粒的支撑减磨作用，复合材料的磨损量随载荷的增大和时间的延长均远小于基体材料，当载荷为1176N时体积分数为12％的复合材料磨损量为4．9mg，而基体材料的磨损量为27．5mg，复合材料比基体材料耐磨性提高了6倍；由磨损表面SEN观察表明：基体A359合金存在严重粘着和变形，表现为粘着磨损和剥层磨损，复合材料的磨损类型表现为磨粒磨损。

Microstructure and Wear Behavior of In Situ Composites Synthesized by A359-Zr (CO3 )2 System

Slide-wearing behavior of in-situ (Al_3Zr +Al_2O_3)_p/A359 composites prepared in A359- Zr(CO_3)_2 system was observed in the condition of boundary oil lubricant. The results show that wear weight-losses of the composites is much lower than that of the matrix with increasing load and extending loading time due to wear resistant effects of the reinforced particles. Wear weight-loss of the composites with 12% particle and the matrix are 4.9 mg and 27.5mg, respectively, at loading of 1 176 N, improved by about 6 times. SEM observation shows that wear morphology of the A359 matrix exhibits adhesion wear and eroded wear due to its significant adhesion and deformation, while wear morphology of the composites shows friction wear.