Microstructure and fracture toughness of TiC-ZrC-WC-Mo-Ni cermets

被引：36

作者：

Zhang, Xiaobo ^{[1
]}

Liu, Ning ^{[1
]}

Rong, Chunlan ^{[1
]}

机构：

[1] Hefei Univ Technol, Dept Mat Sci & Engn, Hefei 230009, Peoples R China

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2008年 / 26卷 / 04期

基金：

中国国家自然科学基金;

关键词：

(Zr; Ti; Mo; W)C solid solution; microstructure; fracture toughness; coreless grains; micro pores;

D O I：

10.1016/j.ijrmhm.2007.08.008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

TiC-based cermets are of advantages such as lower friction coefficient and higher oxidation resistance compared with WC-based cemented carbides. However, the brittleness is still an unavoidable limitation for their utilizations. Microstructure of TiC-xZrC-15WC-14Mo-20Ni-1C cermets with different ZrC contents was studied by using X-ray diffractometry (XRD), scanning electron microscopy (SEM) in combination with energy dispersive spectrometer (EDS). The experimental results show that ZrC has dissolved in the cermets and formed solid solutions of (Zr, Ti, Mo, W)C. The bright and gray coreless grains have been regarded as beneficial for the toughness of the cermets. (C) 2007 Published by Elsevier Ltd.

引用

页码：346 / 356

页数：11

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