放电等离子法烧结制备SiC纳米管/ZrB2复合陶瓷的性能  

Properties of SiC nanotubes/ZrB2 composite ceramics prepared by spark plasma sintering

作　　者：朱雁风[1] 彭博 杜超 武安华[2] ZHU Yan-feng;PENG Bo;DU Chao;WU An-hua(School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471023,China;Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,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]中国科学院上海硅酸盐研究所,上海200050

出　　处：《材料热处理学报》2019年第12期7-12,共6页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金(51701066,U1832106,51872309)

摘　　要：以ZrB2、SiC纳米管(SiCNTs)为主要原料,通过放电等离子法烧结制备了SiC纳米管/ZrB2复合陶瓷。分析了SiC纳米管添加量对复合陶瓷的相对密度、微观结构和力学性能的影响。结果表明:添加SiC纳米管可以有效增强ZrB2陶瓷的力学性能;当SiC纳米管的添加量为1 mass%时,复合陶瓷的力学性能最佳,其抗弯强度为786.53 MPa,维氏硬度为21.58 GPa,断裂韧性为5.21 MPa·m1/2。SiC nanotubes/ZrB2 composite ceramics were prepared by spark plasma sintering with ZrB2 and SiC nanotubes(SiCNTs) as the main raw materials. The effects of SiC nanotubes addition on relative density, microstructure and mechanical properties of the composite ceramics were analyzed. The results show that the mechanical properties of the ZrB2 ceramics can be effectively enhanced by adding SiC nanotubes, and the mechanical properties of the composite ceramics are the best when the content of SiC nanotubes is 1 mass%, and the bending strength is 786.53 MPa, the Vickers hardness is 21.58 GPa, and the fracture toughness is 5.21 MPa·m1/2.

关 键 词：超高温陶瓷 ZRB2 SiC纳米管 放电等离子法 

分 类 号：TB332[一般工业技术—材料科学与工程]