高能球磨辅助热压烧结制备(Ti,V)_3AlC_2陶瓷的反应机理及力学性能  

Reaction mechanism and mechanical properties of (Ti,V)_3AlC_2 ceramic by high-energy milling and hot pressing sintering

作　　者：王芬[1] 王鑫[1] 汤祎[1] 张欣[1] 王子婧[1] 郑义兵[1] WANG Fen WANG Xin TANG Yi ZHANG Xin WANG Zi-jing ZHEN Yi-bing(School of Materials Science and Engineering, Shaanxi University of Science Technology, Xi’an 710021, China)

机构地区：[1]陕西科技大学材料科学与工程学院,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2017年第1期56-61,共6页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(51171096;51142009);陕西省科技厅自然科学基金项目(2010JM6014)

摘　　要：以Ti粉、TiC粉、Al粉、V粉为实验原料,采用高能球磨和原位热压烧结工艺制备了(Ti,V)_3AlC_2块体材料,采用XRD分析、SEM扫描电镜和EDS分析对材料的物相组成与显微结构进行了表征,并对材料的力学性能进行了测试.测试结果表明:在1 400℃保温1.5h烧结制得的(Ti_(0.8),V_(0.2))_3AlC_2材料,相比单相Ti_3AlC_2材料,其抗弯强度增加约20%;断裂韧性增加约52%;硬度增加约45%,力学性能得到显著提高.The ternary compound （Ti, V）3 A1C2 was successfully synthesized by a high-energy ball milling and an in-situ hot pressing sintering using Ti,TiC,Al and V as the starting ma-terials. The XRD,SEM and EDS result indicated that the （Ti,Y）3 AlC2 was synthesized dur-ing 1 400℃ for 1 . 5 h. Compared with the monolithic Ti3 A1C2 synthesized using an identical process,the flexural strength, fracture toughness and vickers hardness of （Ti0 .8 , V0 .2 ）3 A1C2 were enhanced by 20 % , 52 % and 45 % , respectively. The result shows that the mechanics properties are improved significantly.

关 键 词：(Ti1-x Vx)3AlC2 高能球磨 原位热压烧结 断裂韧性 力学性能 

分 类 号：TB321[一般工业技术—材料科学与工程] TF124.37[冶金工程—粉末冶金]