TiAl-B_4C复合陶瓷制备工艺研究  

Study on Preparation Technology of TiAl/B_4C Composite Ceramics

作　　者：杨宝菊[1] 尹衍升 李长江[1] 张卫珂[1] 徐培好 

机构地区：[1]中国海洋大学材料科学与工程研究院,青岛266100 [2]潍柴动力股份有限公司,潍坊261001

出　　处：《硅酸盐通报》2009年第B08期98-101,共4页Bulletin of the Chinese Ceramic Society

基　　金：青岛市將才计划项目(05-2-JC-76)

摘　　要：本文采用机械合金化工艺制备Ti-Al系金属间化合物,以TiAl作为粘结相对B4C进行强化活化烧结,采用热压烧结法制备了TiAl/B4C复合陶瓷,研究了不同TiAl相及TiAl不同含量对复合陶瓷材料的性能影响。结果表明:1680℃,40MPa压力下,TiAl含量为20%时,所制备的复合陶瓷性能较优,其弯曲强度为376.7MPa,断裂韧性接近4.0MPa.m1/2.。通过XRD、SEM、EDS等分析手段对TiAl补强增韧机理进行了探讨。TiAl intermetallic was prepared by mechanical alloying, which has relative high activationg, decreaseing the sintering temperature of B4C, then TiAl/B4C composite ceramic was produced under hotpressing congdition, and the properties of this ceramic were investigated by altering TiAl phase component and content of TiAl, Results show that when content of TiAl is 20%, 1680 ℃ ,40 MPa, the properties of this material is better than others, and its bending strength and fracture toughness is up to 376.7 MPa, 4.0 MPa · m^1/2, respectively. TiAl toughening mechanism was analysed by means of XRD, SEM and EDS.

关 键 词：碳化硼 TIAL金属间化合物 机械合金化 高能球磨 

分 类 号：TQ172[化学工程—水泥工业]