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An electron-microscopic study of nickel carbonyl powders

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Soviet Powder Metallurgy and Metal Ceramics Aims and scope

Conclusions

  1. 1.

    The electron-microscopic technique makes it possible to study the size distribution of the primary particles making up, in the form of aggregates, carbonyl nickel powders, and also the character of the early stages in the aggregation of these particles.

  2. 2.

    The size of the primary particles and the character of their aggregation depend on the conditions of powder preparation. As a general rule, higher rates of powder formation during the thermal decomposition of nickel carbonyl in the volume correspond to smaller sizes and a looser aggregation of the primary particles.

  3. 3.

    The size of the primary particles and the character of their aggregation govern the macroscopic properties, which can readily be determined by experiment, and the particle size distribution of carbonyl nickel powders.

  4. 4.

    During the storage of carbonyl nickel powders, the primary particles within the aggregates spontaneously sinter together, as a result of which compact, coarse (micro-size) nickel particles are formed.

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Author information

Authors and Affiliations

  1. Gipronikel'

    A. Ya. Kipnis, K. A. Muravin & M. A. Nemoitin

Authors
  1. A. Ya. Kipnis
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  2. K. A. Muravin
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  3. M. A. Nemoitin
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Additional information

Translated from Poroshkovaya Metallurgiya, No. 4, (100), pp. 8–12, April, 1971.

The authors are indebted to N. I. Aleshina and S. I. Khamarmer for the provision of powder specimens.

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Kipnis, A.Y., Muravin, K.A. & Nemoitin, M.A. An electron-microscopic study of nickel carbonyl powders. Powder Metall Met Ceram 10, 260–263 (1971). https://doi.org/10.1007/BF00795975

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  • DOI: https://doi.org/10.1007/BF00795975

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