Microstructures of cemented carbides

被引：112
作者：
Andrén, HO
机构：
[1] Chalmers Univ Technol, Dept Expt Phys, S-41296 Gothenburg, Sweden
[2] Univ Gothenburg, SE-41296 Gothenburg, Sweden
来源：
MATERIALS & DESIGN | 2001年 / 22卷 / 06期
关键词：
APFIM; AEM; thermo-cale; solid state sintering; liquid state sintering; segregation;
D O I：
10.1016/S0261-3069(01)00006-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An overview is given of the detailed microstructure of cemented carbides of types WC-Co and WC-MC-Co. and of titanium carbo-nitride based cemented carbides (cermets). The manufacturing process is first described, and the changes in composition that occur during manufacturing are discussed. The microstructure and its formation during sintering is then described for the three types of cemented carbides. In particular is treated: Grain boundary segregation in the carbide skeleton: Control of solid solution hardening in the binder; Segregation in the binder; Formation of a core-rim structure in hard phase grains; Formation of an inner rim during solid state sintering; Slow diffusion of metal atoms in hard phase; Retention of phases far from equilibrium; Approach to paraequilibrium during sintering. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：491 / 498
页数：8
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