B4C质量分数对Cu-B4C复合材料组织和性能的影响  

Effect of B4C Mass Fraction on Microstructure and Properties of Cu-B4C Composites

作　　者：张敏杰 张国赏[1] 李秀青[2] 张倩[1] 王琪 杨晴霞 魏骁 魏森森 张程 周玉成[2] ZHANG Minjie;ZHANG Guoshang;LI Xiuqing;ZHANG Qian;WANG Qi;YANG Qingxia;WEI Xiao;WEI Sensen;ZHANG Cheng;ZHOU Yucheng(Materials Science&Engineering School,Henan University of Science&Technology,Luoyang 471023,China;Henan Key Laboratory of High-temperature Structural Functional Materials,Henan University of Science&Technology,Luoyang 471023,China;Vehicle&Traffic Engineering School,Henan University of Science&Technology,Luoyang 471023,China)

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023 [2]河南科技大学河南省高温结构与功能材料重点实验室,河南洛阳471023 [3]河南科技大学车辆与交通工程学院,河南洛阳471023

出　　处：《河南科技大学学报（自然科学版）》2021年第3期1-6,M0002,共7页Journal of Henan University of Science And Technology:Natural Science

基　　金：国家自然科学基金项目(U1804124);河南省科技攻关基金项目(212102210453);河南科技大学大学生研究训练计划(SRTP)项目(2019056)。

摘　　要：针对纯铜力学性能和耐磨性能较低的问题,采用机械球磨混料和放电等离子烧结技术制备了不同B4C质量分数的Cu-B4C复合材料,并对Cu-B4C复合材料的微观组织、硬度、电导率、致密度和耐磨性等进行了研究。试验结果表明:随着B4C质量分数的增加,B4C颗粒趋于团聚,基体中孔洞数量增加,使得Cu基复合材料的致密度和电导率减小,而硬度和耐磨性则表现为先增加后减小的趋势。当B4C质量分数为15%时,Cu-B4C复合材料的硬度最高为86HBW,且耐磨性最好。与纯铜相比,Cu-15%B4C复合材料的硬度提高了79%。To solve the problem of low mechanical property and wear resistance of pure copper,the Cu-B4C composites with different B4C mass fractions were prepared by mechanical ball milling and spark plasma sintering.The microstructure,hardness,electrical conductivity,density and wear resistance of Cu-B4C composites were researched.The results show that with increasing of B4C mass fraction,B4C particles tend to be reunited,the number of holes in the matrix are increased,the density and conductivity of the composites are decreased,and the hardness and abrasion resistance are increased firstly and then decreased.The highest hardness of 86 HBW and best wear resistance are achieved when the B4C mass fraction is 15%.Compared with pure Cu,the hardness of Cu-15% B4C is increased by 79%.

关 键 词：Cu-B4C复合材料 放电等离子烧结 硬度 耐磨性 

分 类 号：TB333[一般工业技术—材料科学与工程]