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对Al2O3/Mo复合材料的微观形貌进行了分析,同时测试了Al2O3/Mo复合材料的磨损行为。结果表明,随Al2O3体积分数的增加,基体的密度先增大后减小,显微硬度逐渐增加,磨损过程中产生的切削、犁沟在数量、深度上都有一定程度的减少。当Al2O3的体积分数为3%时,随着磨粒粒度的减小,复合材料的比磨损率逐渐增加,Al2O3的体积分数较高(5%、10%、15%)时,比磨损率随磨料粒径的增大而呈现先增加后减少的趋势。材料的磨损量随载荷增加而增加,材料的磨损量的排列顺序不受载荷变化的影响。在同一载荷下,材料的磨损量随掺杂量的增加呈现下降趋势,但是随着掺杂量的不断增大,磨损量下降趋势减缓。
The microstructure of Al2O3 / Mo composites was analyzed, and the wear behavior of Al2O3 / Mo composites was also tested. The results show that with the increase of the volume fraction of Al2O3, the density of the matrix first increases and then decreases, and the microhardness increases gradually. The cutting and furrowing generated in the wear process decrease to a certain extent in quantity and depth. When the volume fraction of Al2O3 is 3%, the specific wear rate of the composites increases with the decrease of the particle size. The specific wear rate increases with the increase of the volume fraction of Al2O3 (5%, 10%, 15%) Abrasive particle size increases with the first increase and then decrease. The wear amount of the material increases with the increase of the load, and the order of the wear amount of the material is not affected by the change of the load. Under the same load, the wear amount of the material shows a downward trend with the increase of the doping amount, but with the doping amount increasing, the wear loss decreases slowly.