您目前所在的位置:首页 - 期刊简介 - 详细页面

铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 12    No. 2    April 2002

[PDF Download]    [Flash Online]

    

Evolution of Ti(C,N)-based cermet
microstructures
LI Chen-hui(李晨辉), XIONG Wei-hao(熊惟皓), YU Li-xin(余立新)

State Key Laboratory of Die and Mould Technology,
College of Materials Science and Engineering,
Huazhong University of Science and Technology,
Wuhan 430074, China

Abstract:Two series of Ti(C,N)-based cermet materials originating from the same chemical composition but with different grain size distribution and sintered to different stages of the sintering cycle have been studied using SEM, TEM, EDX, and XRD. Much of the surrounding structure is formed during solid state sintering. During the solid state sintering, at first, the Mo and W rich (Ti,Mo,W)C inner rim is formed by the interaction among TiC, WC, and Mo2C; then the Mo and W lean (Ti, Mo, W)(C, N)outer rim is formed. During the liquid phase sintering, the outer rim of coarse grains grows rapidly throw a solution-reprecipitation process; also coarse grains grow by particle coalescence. The interface between coarse grain outer rim and binder is flat (crystal surface).

 

Key words: Ti(C,N); cermet; microstructure

ISSN 1672-7029
CN 43-1423/U

主管:中华人民共和国教育部 主办:中南大学 中国铁道学会 承办:中南大学
湘ICP备09001153号 版权所有:《铁道科学与工程学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市韶山南路22号 邮编:410075
电 话:0731-82655133,82656174   传真:0731-82655133   电子邮箱:jrse@mail.csu.edu.cn