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Densification kinetics of coatings being sinter-bonded in a model of viscous flow of a porous solid

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

Conclusions

A theory of sinter-bonding of a powder layer in a model of a linear viscous porous medium is proposed in which the structural transformation of the layer during sinter-bonding is allowed for by introducing two kinetic parameters characterizing sinter-bonding in its initial and final stages; it is shown that there is good agreement between theoretical and experimental data for the isothermal sinter-bonding of PG-SR4 powder in the temperature range 1023–1173°K and the pressure range 10–50 MPa. A study was made of the effect of temperature on the kinetic parameters and of the kinetics of densification of PG-SR4 powder during heating at a constant rate in the range 1100–1250°K; satisfactory agreement is noted between theory and experiment, and the conclusion is arrived at that there exists a lower temperature limit of active sintering.

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Authors and Affiliations

  1. Institute of Machine Reliability and Life Problems, Academy of Sciences of the Belorussian SSR, USSR

    N. N. Dorozhkin, T. M. Abramovich, V. N. Gimel'farb, V. P. Orgadulova & A. M. Sereda

  2. Taganrog Pedagogical Institute, USSR

    N. N. Dorozhkin, T. M. Abramovich, V. N. Gimel'farb, V. P. Orgadulova & A. M. Sereda

Authors
  1. N. N. Dorozhkin
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  2. T. M. Abramovich
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  3. V. N. Gimel'farb
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  4. V. P. Orgadulova
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  5. A. M. Sereda
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Additional information

Translated from Poroshkovaya Metallurgiya, No. 8(284), pp. 25–29, August, 1986.

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Dorozhkin, N.N., Abramovich, T.M., Gimel'farb, V.N. et al. Densification kinetics of coatings being sinter-bonded in a model of viscous flow of a porous solid. Powder Metall Met Ceram 25, 630–634 (1986). https://doi.org/10.1007/BF00796728

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  • DOI: https://doi.org/10.1007/BF00796728

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