Cu-Ti3SiC2复合材料真空热压法制备及性能研究  

Preparation and Properties of Cu-Ti3SiC2 Composites by Vacuum Thermal Pressure Method

作　　者：孙小燕[1] 赵浩 潘培道[1] 汪列隆[1] SUN Xiaoyan;ZHAO Hao;PAN Peidao;WANG Lielong(ChiZhou University of Mechanical and Electrical Engineering,ChiZhou 247000,China;Hefei University of Technology School of Materials Science and Engineering,Hefei 230009,China)

机构地区：[1]池州学院机电工程学院,安徽池州247000 [2]合肥工业大学材料与工程学院,安徽合肥230009

出　　处：《安徽建筑大学学报》2020年第1期73-77,共5页Journal of Anhui Jianzhu University

基　　金：安徽省教育厅高校自然科学研究重点项目(KJ2018A0581)。

摘　　要：Ti3SiC2是一种具有MAX层状结构的先进材料,兼具金属与陶瓷的双重性能。将Ti3SiC2作为弥散强化相与Cu复合制备金属基复合材料,综合力学性能较好,有望在电接触材料中有较好的应用前景。采用热压烧结法制备Cu-Ti3SiC2复合材料,试验证明Cu-Ti3SiC2复合材料的最佳烧结工艺为:烧结温度750℃,压力30 MPa,保温30min,制得复合材料的组织均匀,团聚较少。其次研究了Ti3SiC2含量对复合材料硬度、电阻率等性能的影响,随着Ti3SiC2的体积分数的增加,硬度先增加后降低,相对密度和抗弯强度呈减小趋势,电阻率增加;通过微观显微分析,Cu-Ti3SiC2致密度随Ti3SiC2含量增加而下降。Ti3SiC2 is an advanced material with MAX layered structure,which has the dual properties of metal and ceramic.Ti3SiC2 was used as dispersion strengthening phase and Cu to prepare metal matrix composites,which has good comprehensive mechanical properties and is expected to have a good application prospect in electrical contact materials.The best sintering process of Cu-Ti3SiC2 composite was proved to be as follows:sintering temperature 750℃,pressure 30 MPa,insulation 30min.The composite was prepared with even structure and less agglomeration.Secondly,the effect of Ti3SiC2 content on the properties of composite materials such as hardness and resistivity was studied.With the increase of Ti3SiC2 volume fraction,hardness first increased and then decreased.Through microscopic analysis,the density of Cu-Ti3SiC2 decreased with the increase of Ti3SiC2 content.

关 键 词：Cu-Ti3SiC2 烧结 复合材料 性能 

分 类 号：TB333[一般工业技术—材料科学与工程]