Journal
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
Volume 62, Issue -, Pages 155-160Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijrmhm.2016.06.007
Keywords
WC-6Co cemented carbides; Cu powder; Spark plasma sintering; Sintering temperature; Mechanical properties
Funding
- Jiangxi University of Science and Technology [NSFJ2015-K18]
- National Natural Science Foundation of Jiangxi province [20151BAB216015, GJJ150638]
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The aim of this work is to study the effect of Cu on sintering temperature, densification, microstructure and mechanical properties of WC-6Co cemented carbides fabricated by spark plasma sintering (SPS). Fine grained WC powders with an average size of 1.2 pm, were investigated. Microstructures, hardness, fracture toughness and wear resistance of WC-6(Co/Cu) cemented carbides were measured and observed using SEM, mechanical property test. The results show that the sintering temperature of WC-6Co cemented carbides can be decreased obviously with Cu added; addition of Cu reduced grain size to 0.85 pm, but led to lower density. The adding amount of Cu should be controlled within a certain range, and the samples adding the appropriate proportion of Cu can obtain higher hardness and wear resistance. (C) 2016 Elsevier Ltd. All rights reserved.
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