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Possibility of electric-pulse sintering of powder nanostructural composites

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Abstract

The activities described in the paper are aimed at solving the problem of forming various articles from homogeneous metallic powders of copper and molybdenum, from a mixture of copper, titanium, and boron powders, and from a mixture of the copper powder with uniformly distributed particles of titanium diboride (up to 40 vol.%). The idea is to obtain compacts with the minimumchanges in the initial structure of the material and with high resistance to electric erosion under conditions of high currents. A method of electric-pulse sintering is used, where the compacting process is ensured with one capacitor discharge with a current density of ⩾103 A/mm2 and sintering time of ⩽10−4 sec. Conditions of sintering of powders pre-compressed by a pressure of several kilobars are studied. The density, microstructure, and phase composition of the sintered samples are examined. The erosion resistance of a Cu/TiB2 porous nanostructural composite is tested on a model erosive plasma accelerator.

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Authors and Affiliations

  1. Lavrent’ev Institute of Hydrodynamics, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090, Russia

    A. G. Anisimov & V. I. Mali

Authors
  1. A. G. Anisimov
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  2. V. I. Mali
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Correspondence to A. G. Anisimov.

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Translated from Fizika Goreniya i Vzryva, Vol. 46, No. 2, pp. 135–139, March–April, 2010.

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Anisimov, A.G., Mali, V.I. Possibility of electric-pulse sintering of powder nanostructural composites. Combust Explos Shock Waves 46, 237–241 (2010). https://doi.org/10.1007/s10573-010-0035-3

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  • DOI: https://doi.org/10.1007/s10573-010-0035-3

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