Effect of Carbon Addition on Microstructure and Properties of WC-Co Cemented Carbides

材料科学技术（英）, 2012, 28(9): 837-843.

Effect of Carbon Addition on Microstructure and Properties of WC-Co Cemented Carbides

^1, , ^2, , ^3, , ^4, , ^5, , ^6, , ^7, , ^8,

1.College of Materials Science and Engineering, Key Lab of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, China

2.College of Materials Science and Engineering, Key Lab of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, China

3.College of Materials Science and Engineering, Key Lab of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, China

4.Beijing Belying Hardalloy Co., Ltd., Beijing 100055, China

5.College of Materials Science and Engineering, Key Lab of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, China

6.College of Materials Science and Engineering, Key Lab of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, China

7.College of Materials Science and Engineering, Key Lab of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, China

8.College of Materials Science and Engineering, Key Lab of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, China

基金项目: Acknowledgements This work was supported by the Chinese National Pro- grams for Fundamental Research and Development(Grant 2011CB612207) the Program of National Science Infrastructure Platform and the State Key Laboratory of Powder Metallurgy of Central South University the National Natural Science Foun- dation of China(Grant 51174009)

关键词： WC-Co硬质合金 , 组织与性能 , WC-Co复合粉末 , 碳源 , 金属氧化物 , 相组成 , 原位反应 , 力学性能

Effect of Carbon Addition on Microstructure and Properties of WC-Co Cemented Carbides

Keywords： Cemented carbides , Carbon addition , Composite powder , Phase constitution , Mechanical property ,

Based on a unique method to synthesize WC-Co composite powder by in-situ reactions of metal oxides and carbon, the effects of the carbon addition in the initial powders on the phase constitution, microstructure and mechanical properties of the cemented carbides were investigated. It is found that with a suitable carbon addition the pure phase constitution can be obtained in the sintered bulk from the composite powder. The mechanical properties of the cemented carbides depend on the phase constitution and the WC grain structure. To obtain the excellent properties of the WC-Co bulk, it is important to obtain the pure phase constitution from the appropriate carbon addition in the initial powders and a suitable grain size.

参考文献

[1]	I. Konyashin;S. Hlawatschek;B. Ries .On the mechanism of WC coarsening in WC-Co hardmetals with various carbon contents[J].International Journal of Refractory Metals & Hard Materials,2009(2):234-243.

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材料期刊网

Effect of Carbon Addition on Microstructure and Properties of WC-Co Cemented Carbides

Effect of Carbon Addition on Microstructure and Properties of WC-Co Cemented Carbides

参考文献