Research on Binderless Tungsten Carbide Prepared by Spark Plasma Sintering

Abstract:

Commerical pure WC powders of 0.2, 0.4, 0.8, 2.0 and 3.0 m in diameter were sintered by spark plasma sintering process at 1300 °C, respectively. By analyzing the XRD patterns of the initial powders and the microstructure of the sintered samples, it is affirmed that the powders with an average size of 0.8 m exhibits the best activity and sintering property. To optimize sintering temperature, the sintering of 0.8 m powders was carried out at 1200-1700 °C. The specimen sintered at 1300 °C has a density of 15.49 g/cm3 and an average grain size of about 0.7 m, and exhibits the most excellent mechanical properties. The corresponding Vickers hardness and transverse rupture strength are 2469 HV and 1656 MPa, respectively.

• Periodical: Applied Mechanics and Materials (Volumes 37-38)
• Pages: 980-984
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.37-38.980
• Online since: November 2010
• Authors: Xiaoqiang Li, Zhang Yi Xiao, Chao Yang, Sheng Guan Qu
• Keywords: Particle Size, Pure WC Powders, Spark Plasma Sintering (SPS)

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