微米级和亚微米级Ti(C,N)基金属陶瓷的组织和性能  

Microstructure and Properties of Micon and Submicron Ti(C,N)-based Cermets

作　　者：郑勇[1] 熊惟皓[1] 

机构地区：[1]华中理工大学模具技术国家重点实验室,武汉430074

出　　处：《材料工程》2001年第5期37-40,共4页Journal of Materials Engineering

基　　金：国家自然科学基金 (5 95 710 2 7) ;教育部博士点基金(19990 48714 ) ;湖北省重点科技发展项目 (编号为 992 P0 3 2 2 );粉末冶

摘　　要：对用微米级和亚微米级基金属陶瓷的显微组织和性能进行了研究。发现这两类金属陶瓷的显微组织均由三部分组成 :芯部为黑色、具有明显包覆层的陶瓷颗粒、芯部为白色、包覆层不明显的陶瓷颗粒和粘结相。但对于亚微米级的金属陶瓷 ,其芯部为白色的陶瓷颗粒的数目要比微米级的金属陶瓷多 ,其断裂韧性略有下降 ,但其抗弯强度要高出许多。另外通过 EDA和 X射线衍射分析 。WT5BZ]The microstructure and properties of micron and submicron Ti(C,N) based cermets were studied in this paper.The microstructures of the two kinds of cermet are composed of a kind of grains with black cores and obvious rim structure,and another kind of grains with cores and unconspicuous rim structure and adhesive phase.For submicron cermet,the grains with white cores,are much more than that in micron cermet,and the properties are higher.In addition,the forming mechanism for the two kinds of cemet is obtained by EDA and Xray diffraction analysis.

关 键 词：金属陶瓷 显微组织 性能 微米级 亚微米级 氮化钛 碳化钛 形成机制 

分 类 号：TQ174.758[化学工程—陶瓷工业] TG148[化学工程—硅酸盐工业]