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Ultrafine WC-10Co cemented carbides fabricated by electric-discharge compaction

Published online by Cambridge University Press:  03 March 2011

X.Y. Wu ,
W. Zhang ,
W. Wang ,
F. Yang ,
J.Y. Min ,
B.Q. Wang  and
J.D. Guo
X.Y. Wu
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research,Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
W. Zhang
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research,Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
W. Wang
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research,Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
F. Yang
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research,Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
J.Y. Min
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research,Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
B.Q. Wang
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research,Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
J.D. Guo*
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research,Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
*
a) Address all correspondence to this author. e-mail: jdguo@imr.ac.cn
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Abstract

This research investigates the microstructure and mechanical properties of ultrafine WC-10Co cemented carbides fabricated by an electric-discharge compaction (EDC) process, from powder synthesized by a spray-conversion process (SCP). Due to a short holding time during EDC, a grain size as small as 120 nm can be achieved. We also found that dispersion of pores in WC-Co cemented carbides may contribute to fracture toughness, besides the bridging ligament mechanism.

Keywords

DensificationCementHardness
Type
Articles
Information
Journal of Materials Research , Volume 19 , Issue 8 , August 2004 , pp. 2240 - 2244
Copyright
Copyright © Materials Research Society 2004

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