Experiment Study on the Hot-Shock Consolidation of Tungsten Powder

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Experiments have been conducted to consolidate tungsten powder using hot-shock consolidation technique combining with underwater shock wave. An exothermic mixture (TiO2-C-Al-Fe2O3) was ignited by an electric wire coil to release a large mount of heat via a self-propagating high-temperature synthesis reaction which was used to pre-heat the sample powder. As getting the needed isothermal temperature, the powder was subsequently consolidated by shock wave generated by explosion of nitro methane, with a detonation velocity of 6.3 km/s and a detonation pressure of 11.9 GPa. The density and Vickers micro-hardness of the consolidated sample were determined and its microstructure was analyzed by scanning electron microscope (SEM). High-density tungsten samples were obtained by optimizing the experimental conditions. In this paper, the relative density and hardness of the recovered sample are 96.5% and 670 HV, respectively.

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Periodical:

Edited by:

S. Itoh, J.J. Yoh and K. Hokamoto

Pages:

107-112

DOI:

10.4028/www.scientific.net/MSF.673.107

Citation:

Q. Zhou et al., "Experiment Study on the Hot-Shock Consolidation of Tungsten Powder", Materials Science Forum, Vol. 673, pp. 107-112, 2011

Online since:

January 2011

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$35.00

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