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Binder-free WC was fabricated at the sintering temperature of 1873 K-2023 K by pulsed current sintering (PCS) process, and the density, grain size, hardness and toughness of them were investigated. As a result, the WC sintered at 1973 K showed a very high hardness more than HV10 2700 because it was almost fully dense and no singnificant grain growth occurred during sintering process.
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Shimojima et al. (2003) studied this question.
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