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http://dx.doi.org/10.3740/MRSK.2008.18.7.357

Fabrication and Evaluation of WC-3 wt%Co Compacts Fabricated by Spark Plasma Sintering  

Choi, Jung-Chul (Korea Institute of Industrial Technology (KITECH), Gwangju Research Center)
Chang, Se-Hun (Korea Institute of Industrial Technology (KITECH), Gwangju Research Center)
Cha, Young-Hoon (Department of Mechanical Engineering, Chosun University)
Oh, Ik-Hyun (Korea Institute of Industrial Technology (KITECH), Gwangju Research Center)
Publication Information
Korean Journal of Materials Research / v.18, no.7, 2008 , pp. 357-361 More about this Journal
Abstract
Microstructure and mechanical properties of WC-3 wt% Co cemented carbides, fabricated by a spark plasma sintering (SPS) process, were investigated in this study. The WC-3 wt%Co powders were sintered at $900{\sim}1100^{\circ}C$ for 5min under 40MPa in high vacuum. The density and hardness were increased as the sintering temperature increased. WC-3 wt%Co compacts with a relative density of 97.1% were successfully fabricated at $1100^{\circ}C$. The fracture toughness and hardness of a compact sintered at $1100^{\circ}C$ were $21.6 MPa{\cdot}m^{1/2}$ and 4279 Hv, respectively.
Keywords
spark plasma sintering; WC-Co; microstructure; hardness; fracture toughness;
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