Skip to main content
Log in

Rapid rate sintering of dispersed systems: Theory, processing, and problems

  • Theory and Technology of Sintering, Heat, and Chemical Heat-Treatment Processes
  • Published:
Powder Metallurgy and Metal Ceramics Aims and scope

Abstract

The process of rapid rate sintering of dispersed powders is studied. It is shown that rapid rate sintering results in high density and uniform fine-grained microstructure of the sintered materials. Structure evolution of porous powder packing is analyzed from the viewpoint of the statistics of randomly packed particles with varying average relative density. A new mechanism of rotational rearrangement controlled through grain boundary diffusion and providing uniform densification along with reduction in inter-particle distance is proposed. The advanctages of non-isothermal and rapid heating sintering are discussed.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. G. C. Kuczynski, “Towards the understanding of the process of sintering,” in: G. C. Kuczynski, D. P. Uskokovic, Hayne Palmour III, and M. M. Ristic (eds.),Sintering' 85, Plenum Press, New York, London (1987), pp. 3–16.

    Google Scholar 

  2. D. L. Jhonson, “Ultrarapid sintering of ceramics,” in: D. P. Uskokovic, Hayne Palmour III, and R. M. Spriggs (eds.),Science of Sintering. New Directions for Materials Processing and Microstructural Control, Plenum Press, New York, London (1989), pp. 497–506.

    Google Scholar 

  3. III H. Palmour, “Rate controlled sintering for ceramics and selected powder metals,” in: D. P. Uskokovic, Hayne Palmour III, and R. M. Spriggs (eds.),Science of Sintering. New Directions for Materials Processing and Microstructural Control, Plenum Press, New York, London (1989), pp. 337–356.

    Google Scholar 

  4. V. V. Skorokhod, “Surface relaxation, dynamics of geometric structure and macrokinetics of densification during sitering of ultrafine powders,” in G. C. Kuczynski, D. P. Uskokovic, Hayne Palmour III, and M. M. Ristic (eds.),Sintering' 85, Plenum Press, New York, London (1987), pp. 81–88.

    Google Scholar 

  5. V. V. Skorokhod, “The main trends in study and quantitative description of the sintering processes”, in: D. P. Uskokovic, Hayne Palmour III, and R. M. Spriggs (eds.),Science of Sintering. New Directions for Materials Processing and Microstructural Control, Plenum Press, New York, London (1989), pp. 39–54.

    Google Scholar 

  6. V. V. Skorokhod, and S. M. Solonin,Physical and Metallurgical Bases of Powder Sintering [in Russian], Metallurgia Moscow (1984).

    Google Scholar 

  7. V. V. Skorokhod, Yu. M. Solonin, and I. V. Uvarova,Chemical, Diffusional, and Rheological Processes in Powder Materials Technology, [in Russian], Nauk, Dumka, Kiev (1990).

    Google Scholar 

  8. M. J. Mayo, “Processing of nanocrystalline ceramics from ultrafine particles,”Int. Materials Reviews,41, No. 3, 85–115 (1996).

    CAS  Google Scholar 

  9. V. V. Skorokhod, and A. V. Ragulya, “Features of nanocrystalline structure formation on sintering of ultrafine powders,” in: Gan Moog Chow and N. I. Noskova (eds.),Nanostructured Materials. Science and Technology, NATO ASI. Ser. 3. High Technology, Kluwer Academic Publishers, Dordrecht, Boston, London, Vol. 50, 378–404 (1998).

    Google Scholar 

  10. A. N. Nikolenko, “Statistical analysis of the structure of randomly packed particle media” [in Ukrainian],Ukrain. Phys. J., No. 2, 243–250 (1996).

    Google Scholar 

  11. T. M. Hare, “Statistics of early sintering and rearrangement by computer simulation,” in: G. C. Kuczynski (ed.),Sintering Processes. Materials Science Research, Plenum Press, New York (1979), pp. 77–88.

    Google Scholar 

  12. R. M. Kadushnikov, and V. V. Skorokhod, “Research of the zonal, separation during sintering of powder bodies by computer modelling methods” [in Russian],Poroshk. Metall., No. 7, 31–37 (1991).

    Google Scholar 

  13. R. M. German,Liquid Phase Sintering, Plenum Press, New York (1985).

    Google Scholar 

  14. M. Ashby, and R. Verall, “Non-uniform viscous flow of polycrystalline bodies and superplasticity,”Acta Metall.,21, No. 2, 53–61 (1973).

    Google Scholar 

  15. Ya. E. Geguzin,Physics of Sintering (2nd Edition) [in Russian], Nauka, Moscow (1984).

    Google Scholar 

  16. H. E. Exner, “Principles of single phase sintering,”Rew. of Powder Metallurgy and Physical Ceramics,1, Nos. 1–4, 7–251 (1979).

    Google Scholar 

  17. V. V. Skorokhod, L. A. Vermenko, O. I. Getman, and S. P. Rakitin, “Electron-optical research of the sintering kinetics for tungsten powders with spherical particles” [in Russian],Porochk. Metall., No. 5, 11–14; No. 6, 20–28 (1987).

    Google Scholar 

  18. Yu. V. Gostev, V. V. Panichkina, I. L. Pasholok, and N. I. Filippov, “Transformation of compacts porous structure for dispersive tungsten powders in the initial sintering stages” [in Russian],Porochk. Metall., No. 3, 23–26 (1991).

    Google Scholar 

  19. V. V. Ivensen,Phenomenology of Sintering [in Russian], Metallurgiya, Moscow (1985).

    Google Scholar 

  20. V. V. Skorokhod, “Sintering of powder materials in electrothermal, plasma, and laser heating,” in: I. K. Pokhodnya ed.),Advanced Materials Science: 21st Century, Science Publishing, Cambridge (1998), pp. 204–226.

    Google Scholar 

Download references

Authors

Additional information

Institute for Problems of Materials Science, Ukraine National Academy of Sciences, Kiev. Translated from Poroshkovaya Metallurgiya, Nos. 7–8(408), pp. 30–39, July–August, 1999.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Skorokhod, V.V. Rapid rate sintering of dispersed systems: Theory, processing, and problems. Powder Metall Met Ceram 38, 350–357 (1999). https://doi.org/10.1007/BF02676168

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02676168

Keywords

Navigation