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Use of a mathematical model for pore volume shrinkage over a wide temperature range

  • Theory And Technology Of The Forming Process
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Powder Metallurgy and Metal Ceramics Aims and scope

Abstract

On the basis of experimental data for the sintering of nickel powder under a regime of alternate isothermal and non-isothermal periods, it is shown that a mathematical model of pore volume decrease is capable of describing the process over the temperature range 550–900°C. It appears that in all cases both the time and temperature dependence of pore volume shrinkage are determined by parameter-constants which depend on the method of production of the initial powder.

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References

  1. V. A, Ivensen, and V. Z. Belen'kii, “Mathematical model of isothermal sintering,” [Reports]: Poroshkov. Metall., 1990, I. “Derivation of the generalized kinetic equation,” No. 8, 24–29. II. “Comparison of calculated and experimental pore volume shrinkage curves for the sintering of nickel powder,” No. 10, 38–43; III. “Use of a “two-stage model” to describe the basic laws of nonisothermal sintering,” 1990, No. 2, 24–31.

  2. V. A, Ivensen, Kinetics of Densification of Metal Powders during Sintering /in Russian/, Metallurgiya, Moscow (1971).

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  3. V. Z. Belen'kii, “Mathematical analysis of Ivensen's model for pore volume contraction during the sintering of porous bodies,” Poroshkov. Metall., No. 8, 56–61 (1993).

  4. V. A. Ivensen, “Physical interpretation of the phenomenological model for the sintering of porous bodies,” Ibid., 47–56.

  5. V. A. Ivensen and T. A. Rakoch, “Time dependence of pore volume shrinkage during the sintering of molybdenum and tungsten carbide powders,” Ibid., No. 4, 30–34 (1986).

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Authors
  1. V. A. Ivensen
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Additional information

NIPI of Refractory Metals and Hard Alloys, Moscow. Translated from Poroshkovaya Metallurgiya, Nos. 9–10, pp. 43–50, September–October, 1995.

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Ivensen, V.A. Use of a mathematical model for pore volume shrinkage over a wide temperature range. Powder Metall Met Ceram 34, 528–533 (1996). https://doi.org/10.1007/BF00559962

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  • DOI: https://doi.org/10.1007/BF00559962

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