注射成形SiC_p/Cu复合材料的显微组织与性能  

Microstructure and Mechanical Properties of Injection Molded SiC_p/Cu Composite

作　　者：张奕 胡建斌 贺毅强[1,2] 冯立超[1,2] 李化强[2,3] 

机构地区：[1]连云港东睦新材料有限公司,江苏连云港222005 [2]淮海工学院机械工程学院,江苏连云港222005 [3]江苏省海洋资源开发研究院,江苏连云港222005

出　　处：《有色金属工程》2015年第1期9-13,共5页Nonferrous Metals Engineering

基　　金：国家自然科学基金资助项目(51004050);江苏省自然科学基金资助项目(BK20141250);江苏省高校自然科学研究面上项目(14KJB430005);江苏高校优势学科建设工程资助项目;江苏省海洋资源开发研究院开放基金(JSIMR201222);2012年度江苏"青蓝工程"人才项目

摘　　要：采用粉末注射成形工艺成形Si Cp/Cu复合材料,再采用溶剂脱脂、热脱脂和烧结的工艺制备复合材料试样。研究成形过程中复合材料显微组织的变化和烧结后的显微组织和力学、磨损性能。结果表明,Si Cp/Cu复合材料在1 050℃和H2保护下烧结状况良好。复合材料的抗拉强度取决于Si C颗粒的体积分数以及其在基体中的分布状况。Si C体积含量为5%和10%,微裂纹萌生于Si C颗粒与基体的界面处,Si C含量为15%,微裂纹萌生于Si C颗粒之间的基体。Si C体积分数为5%,10%,15%的Si Cp/Cu复合材料的抗拉强度分别为254,291和278 MPa。复合材料的力学性能随Si C含量的升高先升高后降低,磨损性能随Si C含量的增加而增加。The SiCp/Cu composite is prepared by powder injection molding,and then the samples are produced by solvent degreasing,hot degreasing and sintering. The microstructure evolution of the composite during injection molding,and the microstrcture,mechanical properties and wear property of the sintered composite are investigated. The results show that SiCp/ Cu composite is well sintered at 1 050 ℃ under H2 atmosphere. The tensile strength of the composite depends on volume fraction and distribution of the SiC particle. The microcrack produces along the Si C-Al interface while the SiC volume content is 5% and 10% in SiCp/Cu composite. While the SiC volume content is 15%,the microcrack produces in the Cu matrix between different SiC particles. The tensile strength of the composites with the SiC volume content of 5%,10% and15% are 254,291 and 278 MPa,respectively. The comprehensive mechanical property of the composite increases initially and then decreases with the increasing volume fraction of Si C particle. However wear property of the composite keeps increasing with the increasing volume fraction of the SiC particle.

关 键 词：SICP/CU复合材料 注射成形 烧结 SIC颗粒 显微组织 力学性能 磨损性能 

分 类 号：TF124.39[冶金工程—粉末冶金]