Fabrication of tungsten carbide-vanadium carbide core-shell structure powders and their application as an inhibitor for the sintering of cemented carbides

被引：25
|
作者：
Lin, Nan [1 ]
He, Yuehui [1 ]
Wu, Chonghu [2 ]
Zhang, Qiankun [1 ]
Zou, Jin [3 ]
Zhao, Zhongwei [1 ,4 ]
机构：
[1] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China
[2] Xiamen Tungsten Co Ltd Technol Ctr, China Natl R&D Ctr Tungsten Technol, Xiamen 361009, Peoples R China
[3] Univ Queensland, Sch Mech & Min Engn, Ctr Microscopy & Microanal, Brisbane, Qld 4072, Australia
[4] Cent S Univ, Sch Met Sci & Engn, Changsha 410083, Peoples R China
来源：
SCRIPTA MATERIALIA | 2012年 / 67卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Nanocomposite; Transmission electron microscopy; Cermets; Hardness; Ultrafine-grained microstructure; NANOSTRUCTURED WC; SIZE;
D O I：
10.1016/j.scriptamat.2012.07.043
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
An innovative way to synthesize tungsten carbide-vanadium carbide core-shell structure powders, which are predicted to act as inhibitors for cemented carbides, has been explored. The core-shell structures were synthesized by chemically induced precipitation and carbonization reactions. The cemented carbides with a homogeneous microstructure were prepared at 1400 degrees C. The existence of tungsten carbide-vanadium carbide core-shell structure can significantly refine tungsten carbide grains, inhibit the abnormal growth of finer grains in the liquid sintering and improve the mechanical properties of the hard metals. (c) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：826 / 829
页数：4
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