Synthesis of Nano-WC by High-Energy Ball Milling

Abstract:

Nanosized tungsten carbide (nanoWC) has been widely studied and applied in many industries as hard materials since it has good combination of high hardness and strength. Thermal mechanical alloying method consisting of high-energy ball milling and subsequent carbonization is a common synthetic approach to prepare nanoWC. In this paper, a special milling process has been reviewed, in which the dielectric barrier discharge plasma (DBDP) is introduced, for the preparation of nanoWC. The DBDP milling renders the W+C powders with specific flake-like structure possible owing to the cooperative effect of DBDP and mechanical milling. The obtained W+C powders are activated significantly within shortened milling period. Furthermore, pure nanoWC powders can be synthesized after subsequent carbonization at a significantly lowered temperature. DBDP milling is demonstrated to be an efficient way to synthesize nanoWC.

• Periodical: Materials Science Forum (Volumes 745-746)
• Pages: 327-334
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.745-746.327
• Online since: February 2013
• Authors: Le Yang Dai, Shao Fen Lin, Jing Feng Chen, Wen Chun Wang
• Keywords: Dielectric Barrier Discharge Plasma, High-Energy Ball Milling, Nano-WC, Thermal Mechanical Alloying

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