Structure and properties of nanophase WC/Co/VC/TaC hardmetal

被引：51
|
作者：
Kim, BK
Ha, GH
Lee, GG
Lee, DW
机构：
[1] Korea Inst. of Mach. and Materials, Changwon, Kyungnam
来源：
NANOSTRUCTURED MATERIALS | 1997年 / 9卷 / 1-8期
关键词：
D O I：
10.1016/S0965-9773(97)00061-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new approach to produce nanophase WC/Co/VC/TaC powder was developed by thermochemical processing method for improving the mechanical properties. To overcome coarsening and abnormal grain growth of the WC particles for nanophase WC/Co during the sintering, VC/TaC, VC, and TaC are used as the grain growth inhibitors by mechanical and chemical process. Nanophase WC/Co eloped VC and VC/TaC by mechanical mixing was shown nanoscale microstructure, but exaggerated local grain growth was observed due to non-uniform distribution of grain growth inhibitors Nanophase WC/Co/VC/TaC synthesized by chemical process was shown ultrafine microstructure without local grain growth microstructure and mechanical properties of nanophase WC/Co/VC/TaC are compared with those of commercial submicron WC/Co/VC/TaC. (C) 1997 Acta Metallurgica Inc.
引用
收藏
页码：233 / 236
页数：4
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