Mechanism of grain growth control in Ti(C, N)-based cermet during sintering

被引：0
|
作者：
Zheng, Y [1 ]
Yu, HJ [1 ]
Bu, HJ [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2005年 / 15卷
关键词：
cermet; grain growth inhibitors; microstructure;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A typical Ti(C, N)-based cermet and another cerruct with grain growth inhibitor Cr,C, were studied using scanning electron microscopy (SEM), transmission electron microscopy ( TEM), energy dispersive X ray analysis (EDX). The two cermets have a "core-rim" structure. The structure is formed by dissolution of small ceramic grains and precipitation of (Ti. Mo. W) (C, N) around the remaining TiC core. Most of chromium element congregated in the rim phase when Cr,,G, was added. During liquid phase sintering solved in binder phase and congregated around the hard grains, which reduced the solubility of TiC ill liquid phase and consequently restrained the dissolution and reprecipitation, the grains were restrained front growing up during sintering.
引用
收藏
页码：144 / 147
页数：4
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