烧结温度对MAX/Cu复合材料的组织及性能影响  

Effect of Sintering Temperature on Microstructure and Properties of MAX/Cu Composites

作　　者：李海生 周叶晨 李烨飞[1] 郑巧玲[1] 何小林 郑常勇 陈雨时 杨一帆 张智浩 包一兰 LI Haisheng;ZHOU Yechen;LI Yefei;ZHENG Qiaoling;HE Xiaolin;ZHENG Changyong;CHEN Yushi(State Key Laboratory for Mechanical Behavior of Materials,School of Materials Science and Engineering,Xi'an Jiaotong University,Xi'an 710049,China;Shaanxi Guotie Industrial Development Co.,Ltd.,Xi'an 710054,China)

机构地区：[1]西安交通大学金属材料强度国家重点实验室,材料科学与工程学院,陕西西安710049 [2]陕西国铁工业开发有限公司,陕西西安710054

出　　处：《铸造技术》2022年第6期439-444,共6页Foundry Technology

基　　金：国家重点研发计划(2021YFB3701204);广东省重点领域研发计划(2019B010942001);陕西省自然科学基础研究计划(2022JQ-532,2021JM-011)。

摘　　要：以一种典型的MAX相材料Ti_(3)AlC_(2)为原料,采用粉末冶金无压烧结的方式,压坯压力选用500 MPa,烧结时间为1 h,分别选用800、900、1000、1100、1200℃5个烧结温度制备了MAX/Cu复合材料。通过对样品的金相、电导率与显微硬度等测试,探讨了不同烧结温度下MAX/Cu复合材料的组织及其性能变化。结果表明,无压烧结最佳烧结温度为1100℃,可以得到综合性能最佳的复合材料,硬度、致密度和导电率分别达到330 HV、99.5%以上和4.6 m S/m。Taking a typical MAX phase material Ti_(3)AlC_(2) as raw material,MAX/Cu composites were prepared by the press-free sintering method of powder metallurgy with 500 MPa pressure and 1 h sintering time at 800,900,1000,1100 and 1200℃,respectively.The microstructure and properties of MAX/Cu composites at different sintering temperatures were investigated by testing the microstructure,electrical conductivity and microhardness of the samples.The results show that the optimum sintering temperature of press-free sintering is 1100℃,and the composite with the best comprehensive properties can be obtained,with hardness,density and conductivity reaching 330 HV,99.5% and 4.6 m S/m,respectively.

关 键 词：Ti_(3)AlC_(2) MAX相 铜基复合材料 

分 类 号：TG146.11[一般工业技术—材料科学与工程]