TiC/Ti2Cu增强钛基复合材料的组织性能  

Microstructure and properties of TiC/Ti2Cu reinforced titanium matrix composites

作　　者：罗军明[1] 谢娟 LUO Jun-ming;XIE Juan(School of Materials Science and Engineering,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]南昌航空大学材料科学与工程学院

出　　处：《材料热处理学报》2019年第12期1-6,共6页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金(51764041)

摘　　要：采用表面无敏化、无活化的化学镀铜法对石墨烯进行表面镀铜,并通过微波烧结法原位合成TiC/Ti2Cu增强钛基复合材料,研究烧结温度对钛基复合材料显微组织和性能的影响。结果表明:石墨烯表面成功镀覆了一层较为均匀分布的铜颗粒,石墨烯与基体Ti界面反应生成TiC和Ti2Cu相。随烧结温度的升高,复合材料的相对密度、压缩强度和耐磨性先升高后下降,摩擦系数先降低后升高,烧结温度1150℃时复合材料的性能最佳,其相对密度、抗压强度、摩擦系数分别为97.56%、1614 MPa、0.55。Graphene surface was coated with copper by surface unsensitized and unactivated chemical copper plating, and TiC/Ti2Cu reinforced titanium matrix composites were in situ synthesized by microwave sintering. The effect of sintering temperature on microstructure and properties of the titanium matrix composites was studied. The results show that graphene surface is successfully coated with a uniform layer of copper particles, and graphene reacts with matrix Ti to form TiC and Ti2Cu phases. With the increase of sintering temperature, the relative density, compressive strength and wear resistance of the composites increase at first and then decrease, and the friction coefficient decreases at first and then increases. The properties of the composites are the best at sintering temperature of 1150 ℃, and the relative density, compressive strength and friction coefficient of the composites are 97.56%, 1614 MPa and 0.55, respectively.

关 键 词：石墨烯表面镀铜 TiC/Ti2Cu 微波烧结 钛基复合材料 原位合成 

分 类 号：TB331[一般工业技术—材料科学与工程]