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Conditions of preparation and some properties of pseudobinary B4C-B4Si hard alloys

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Soviet Powder Metallurgy and Metal Ceramics Aims and scope

Summary

  1. 1.

    Alloys from the pseudobinary section B4C-B4Si were produced from mixtures of the three elemental powders (B + Si + C) by the method of hot pressing and subsequent high-temperature annealing. On the basis of x-ray and metallographic analyses and a microhardness study, it was established that the alloys in this section form a continuous series of solid solutions.

  2. 2.

    The microhardness versus composition curve of B4C-B4Si alloys has a smooth shape and a maximum attaining 7000 daN/mm2 for the alloy with 60 mol.% B4C and 40 mol.% B4Si.

  3. 3.

    A study of the oxidation resistance of B4C -B4Si alloys at 1000°C demonstrated that the oxidation kinetics curves of these alloys have a diffusional, parabolic character, showing a gradual inhibition of oxidation rate. Oxidation results in the formation of a dense, tenacious vitreous film of the borosilicate type. The maximum oxidation resistance is exhibited by the alloy with 70 mol.% B4Si.

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Authors and Affiliations

  1. Moscow Institute of Steel and Alloys, USSR

    G. A. Meerson, S. S. Kiparisov, M. A. Gurevich & Den Feng-siang

Authors
  1. G. A. Meerson
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  2. S. S. Kiparisov
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  3. M. A. Gurevich
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  4. Den Feng-siang
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Meerson, G.A., Kiparisov, S.S., Gurevich, M.A. et al. Conditions of preparation and some properties of pseudobinary B4C-B4Si hard alloys. Powder Metall Met Ceram 4, 223–228 (1965). https://doi.org/10.1007/BF00773772

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  • DOI: https://doi.org/10.1007/BF00773772

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