摘要
采用固溶型Ti(C,N)、Mo2C、WC、Co、Ni、Ce作为原料粉末,通过粉末冶金真空液相烧结Ce改性的Ti(C,N)基金属陶瓷材料,并对金属陶瓷复合材料的微观形貌和性能进行分析。研究结果表明,添加稀土Ce后,Ti(C,N)基金属陶瓷的硬质相变得细小且均匀,微观组织中的空隙和缺陷也减少了;随着Ce含量的增加,金属陶瓷材料的维氏硬度、抗弯强度以及断裂韧性均呈现出先增大后逐渐减小的趋势,当Ce的含量增加到0.5 wt%时,金属陶瓷材料的维氏硬度、抗弯强度以及断裂韧性达到最佳,分别为102.3 HRA、902.2 MPa、11.5 MPa·m1/2。
Solid solution Ti(C,N), Mo2 C, WC, Co, Ni and Ce were used as raw material powders, and Ce modified Ti(C,N)-based cermets were prepared by powder metallurgy vacuum liquid sintering method. The microstructure and properties of cermets were measured and analyzed. The results show that the hard phase of the Ti(C,N)-based cermet became fine and uniform, and the voids and other defects in the microstructure were also reduced after adding rare earth Ce. The Vickers hardness, flexural strength and fracture toughness first increased and then gradually decreased with the increase of Ce content. When the content of Ce increased to 0.5 wt%, the hardness, flexural strength and fracture toughness were the optimal, which were 102.3 HRA, 902.2 MPa and 11.5 MPa·m1/2, respectively.
作者
同艳维
何洪静
李娜丽
TONG Yanwei;HE Hongjing;LI Nali(College of Vanadium and Titanium,Panzhihua University,Panzhihua 617000,China)
出处
《中国陶瓷》
CAS
CSCD
北大核心
2020年第7期14-18,共5页
China Ceramics
基金
四川省科技厅项目(No.2018JY0423)
太阳能技术集成及应用推广四川省高校重点实验室项目(TYNSYS-2018-Y-03)
钒钛资源综合利用四川省重点实验室项目(2019FTSZ04)
攀枝花市人才新政国家钒钛检测重点实验室综合资助项目(20180816)。
关键词
TI(C
N)基金属陶瓷
组织形貌
力学性能
稀土元素
Ti(C,N) cermet
Microstructure and morphology
Mechanical properties
Rare earth element
