Ti_3SiC_2陶瓷颗粒增强铜基复合材料的组织和性能  

Properties and Microstructure of Ti_3SiC_2-Particulate Reinforce Cu-Matrix Composite

作　　者：张中宝[1] 许少凡[1] 袁传勇[1] 

机构地区：[1]合肥工业大学,安徽合肥230009

出　　处：《稀有金属快报》2006年第5期30-33,共4页Rare Metals Letters

摘　　要：为了考察Al,Sn,Zr,Mo合金元素对?`钛合金在室温和77K低温(液氮)下的缺口冲击韧性(冲击值Ak)的影响,采用示波冲击试验机测试了Ti-2Al,Ti-2Sn,Ti-2Zr和Ti-1Mo4种?`钛合金在室温和77K下的Ak值,并计算了表征其冲击韧性的弹性变形功、塑性变形功和裂纹扩展撕裂功。用扫描电镜观察了4种合金冲击试样断口的形貌。计算数据和显微组织表明,4种合金均显示韧性特征,4种合金元素对冲击韧性贡献的顺序为:Mo>Zr>Sn>Al。Titanium silicon carbide （Ti3SiC2）ceramic material has excellent electrical and thermal conductivity,high strength,good oxidation and thermal shock resistance and self-lubricating properties. For its friction coefficient is lower than graphite,it is possible to replace graphite with Ti3SiC2 for producing copper matrix composites which possesses more excellent properties.In this article,the effects of different Ti3SiC2 volume on the microstructure and mechanical propetrties of Cu-matrix composite were studied,and compared with Cu-graphite composite.The results show that the Vickers hardness and bending strenght of Cu-Ti3SiC2 electrical-brush composite are higher than that of traditional Cu-graphite electrical-brush composite, the Ti3SiC2 in it is fairly well-distributed and the copper can form the three dimensional net skeleton structure.

关 键 词：TI3SIC2 复合材料 硬度 强度 

分 类 号：TB331[一般工业技术—材料科学与工程]