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Sintering a disperse mixture of W-Sc2O3 powders

  • Theory And Technology Of Sintering Processes, Heat Treatment And Chemical Heat Treatment
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Powder Metallurgy and Metal Ceramics Aims and scope

Abstract

The effect of additions of scandium oxide (1, 5, and 10 vol. %) on compaction during sintering of a disperse mixture of W-Sc2O3 powder at 2000°C has been studied. It has been found that the scandium oxide particles activate compaction during heating and conversely retard shrinkage of tungsten in the stage of isothermal soaking. The kinetics of compaction during sintering is determined by the geometry of the heterophase system. Depending on how much the tungsten and scandium oxide particles increase in size, the nature of thestructure changes markedly from matrix-statistical to statistical.

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Authors
  1. O. I. Get'man
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  2. V. V. Panichkina
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  3. V. V. Skorokhod
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Additional information

Institute of Problems in Materials Science, National Academy of Sciences of Ukraine, Kiev. Translated from Poroshkovaya Metallurgiya, Nos. 11/12(382), pp. 10–15, November–December, 1995.

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Get'man, O.I., Panichkina, V.V. & Skorokhod, V.V. Sintering a disperse mixture of W-Sc2O3 powders. Powder Metall Met Ceram 34, 595–599 (1996). https://doi.org/10.1007/BF00559486

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  • DOI: https://doi.org/10.1007/BF00559486

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