Physical, Antioxidant and Thermal Shock Properties of Cu/Ti_2AlC Conductive Composites  

作　　者：严明 ZENG Chengwen LI Zongyu LI Xuefeng 陈艳林 

机构地区：[1]School of Materials Science & Engineering, Hubei University of Technology [2]Huber Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2013年第3期504-507,共4页武汉理工大学学报（材料科学英文版）

基　　金：Funded by Hubei Province Natural Science Foundation(No.2012FFB00608);the Youth Science and Technology Morning Program of Wuhan(No.201150431129);the Youth Science and Technology Program of Hubei Province Education Department(No.20121407);National Natural Science Foundation of China(No.51273059)

摘　　要：Cu/Ti2AlC composites were fabricated by vacuum hot-pressing technique. Phase composition was analyzed by XRD and morphology of fracture was observed by SEM. Physical performance such as density, resistivity, hardness and friction coefficient with different volume fraction of Cu/Ti2AlC composites were studied. When the content of Ti2AlC increased from 10% to 70%, the relative density reduced from 99.38% to 90.56% and the resistivity increased significantly. Hardness reached the maximum value when Ti2AlC was at 60% and friction coefficient declined with the increasing of Ti2AlC. Cu/Ti2AlC composites, showing good conductivity properties and friction performance. Oxidation resistance enhanced obviously with the content of Ti2AlC increasing. Cu-60%Ti2AlC sample possessed optimum thermal shock resistance, and no cracking was found at 600 ℃ cycled for 10 times and 900 ℃ cycled for 1 time.Cu/Ti2AlC composites were fabricated by vacuum hot-pressing technique. Phase composition was analyzed by XRD and morphology of fracture was observed by SEM. Physical performance such as density, resistivity, hardness and friction coefficient with different volume fraction of Cu/Ti2AlC composites were studied. When the content of Ti2AlC increased from 10% to 70%, the relative density reduced from 99.38% to 90.56% and the resistivity increased significantly. Hardness reached the maximum value when Ti2AlC was at 60% and friction coefficient declined with the increasing of Ti2AlC. Cu/Ti2AlC composites, showing good conductivity properties and friction performance. Oxidation resistance enhanced obviously with the content of Ti2AlC increasing. Cu-60%Ti2AlC sample possessed optimum thermal shock resistance, and no cracking was found at 600 ℃ cycled for 10 times and 900 ℃ cycled for 1 time.

关 键 词：Cu-based composites TI2ALC hot-pressing technique PROPERTIES 

分 类 号：TB34[一般工业技术—材料科学与工程]