Science and Technology of Energetic Materials

Vol.78, No.4 (2017)

Research paper

Surface coating by tungsten carbide particles on a metal substrate by high velocity collision
Shigeru Tanaka, Akihisa Mori, Hayato Oda, Daisuke Inao, and Kazuyuki Hokamoto


The surface properties of metal plates were improved using tungsten carbide (WC) powder via a series of experiments, which involved explosions to cause acceleration and flight of metal plates for a high-velocity collision of the metal plates with the WC powder. The flight velocities of the metal plates were calculated by numerical analysis and were consistent with the results obtained by the application of Gurney equations. The combination of fine particle of WC powder with the SUS304 plate resulted in the plastic flow of SUS304 between the WC powder particles that were compressed by impact, forming a film composed of both the materials. The improvement in the wear characteristics of the metal base material was confirmed by wear tests of the films.

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tungsten carbide, powder coating, explosive, high velocity collision, numerical analysis

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