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Ti2AlC/TiB2/TiC复相陶瓷的制备及性能研究
赵芳,王明远,唐香珺,张翼飞,李俊寿
(军械工程学院先进材料研究所,石家庄 050003)
摘要:
采用SHS法合成了Ti2AlC、TiB2、TiC三相复合陶瓷粉体;应用SPS技术制备了Ti2AlC/TiB2/TiC块体复相陶瓷材料;采用XRD、SEM和EDS等手段对复相材料的相组成、微观形貌进行了分析。研究结果表明:在所制备的复相块体陶瓷中,Ti2AlC为基体相,TiB2和TiC弥散分布于基体相中;复相块体陶瓷具有高的致密度,为99.6%;显微硬度平均为12.96 GPa;断裂韧性为45.28 MPa ·m1/2,这为下一步研究其可加工性提供了实验依据。
关键词:  Ti2AlC,TiB2,复相陶瓷,力学性能 中图法分类号: TQ174.1DOI:10.3969/j.issn.1007-2330.2016.05.006 〖JZ
DOI:
分类号:
基金项目:国家自然科学基金资助(项目号51172281);
Synthesis and Properties of Ti2AlC/TiB2/TiC Multiphase Ceramic
ZHAO Fang, WANG Mingyuan, TANG Xiangjun, ZHANG Yifei, LI Junshou
(Advanced Material Institute,Shijiazhuang 050003)
Abstract:
The three-phase ceramic powders of Ti2AlC, TiB2 and TiC are synthesized by self-propagating high-temperature synthesis(SHS) technology. Ti2AlC/TiB2/TiC block multiphase ceramics are prepared by spark plasma sintering(SPS) method. The results show that Ti2AlC is the matrix phase, and TiB2 , TiC are dispersed on the matrix. The high density of Ti2AlC/TiB2/TiC block multiphase ceramic is 99.6%, the average microhardness value is 12.96 GPa, the fracture toughness value is 45.28 MPa·m1/2.
Key words:  Ti2AlC, TiB2,Multiphase ceramic,Workability