Cu/Ti_3AlC_2复合材料的耐磨性研究

Study on the wear-resistance Cu/Ti_3AlC_2 composite

以元素单质粉Ti,Al,C,Cu为原料,采用机械合金化和放电等离子烧结(SPS),成功制备了Cu/Ti3AlC2复合材料块体,并对其进行了组织性能分析。实验结果表明:采用SPS烧结技术制备的Cu/Ti3AlC2复合材料,随着Ti3AlC2含量的增加,其显微硬度逐渐提高,相同烧结工艺条件下(900℃烧结,保温20 min)添加15vol%Ti3AlC2复合材料的硬度比纯Cu提高近2倍;添加适量的Ti3AlC2可显著提高复合材料的耐磨性,当复合材料中含5vol%Ti3AlC2时,磨损量降低30%以上。

With Ti, Al, C, Cu as raw material, composite Ti3AlC2 is made by means of mechanical alloying and spark plasma sintering（SPS）. We analyze its structural performances in detail： the microhardness of the Cu/Ti3AlC2 composite, prepared with SPS method, will increase with the up of Ti3AlC2 content; at the same conditions of 900 ℃ and 20 min heat preservation, its hardness with 15vol%Ti3AlC2 is 2 times of that with pure Cu; its wear-resistance of the composite with 5vol% Ti3AlC2 would be decreased over 30%. It comes to a conclusion that suitable content of Ti3AlC2 may increase the wear-resistance of the composite.