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Activation and sintering of chromium oxide powders

  • Theory and Technology of Sintering, Thermal, and Chemicothermal Treatment Processes
  • Published:
Soviet Powder Metallurgy and Metal Ceramics Aims and scope

Conclusions

  1. 1.

    Milling in a planetary mill raises the level of crystal lattice microdistortions in chromium oxide powder, reduces the particle size of the powder, and breaks up its mosaic blocks. The kinetics of the variation of the particle and block sizes is characterized by saturation.

  2. 2.

    Fine crystal structure defects are annealed out in the temperature range 900–1100°C. Marked densification of chromium oxide during calcining in a reducing atmosphere begins at 1300°C.

  3. 3.

    Milling as a means of activation substantially improves the sintering of Cr2O3 powders at temperatures of 1500–1600°C. For activated chromium oxide powders a correlation is found between the degree of sintering and the level of structural defectiveness.

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Authors and Affiliations

  1. Kharkov

    B. G. Alapiti, F. V. Degtyareva, É. L. Karyakina, P. P. Krivoruchko & S. V. Lysak

Authors
  1. B. G. Alapiti
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  2. F. V. Degtyareva
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  3. É. L. Karyakina
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  4. P. P. Krivoruchko
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  5. S. V. Lysak
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Translated from Poroshkovaya Metallurgiya, No. 2(158), pp. 17–21, February, 1976.

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Alapiti, B.G., Degtyareva, F.V., Karyakina, É.L. et al. Activation and sintering of chromium oxide powders. Powder Metall Met Ceram 15, 96–99 (1976). https://doi.org/10.1007/BF00793557

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  • DOI: https://doi.org/10.1007/BF00793557

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