Refractories

, Volume 36, Issue 1–2, pp 14–16 | Cite as

Some special features of structure formation in sintering ultradisperse powders of TiN — AlN compositions

  • S. S. Ordan'yan
  • S. O. Krylov
  • E. K. Stepanenko
  • U. A. Tsielin
Research

Abstract

Regularities of compaction and changes in the pore structure of ultradisperse powders of pure TiN, AlN, and compositions based on them are investigated during sintering in a wide range of temperatures. It is established that the distribution of pores, against the background of the continuously decreasing total volume of them with increase in temperature, is close to unidimensional, and for an equivolume compositiondav is about 35 nm in a wide range of sintering temperatures. The latter effect can be used for practical purposes.

Keywords

Compaction Pore Structure Structure Formation Practical Purpose Ultradisperse Powder 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    M. A. Kuzenkova, A. V. Kurdyumov, G. N. Makarenko, et al., “Structural changes in sintering ultradisperse powders of aluminum nitrides,”Poroshkovaya Metallurgiya, No. 10, 35 – 40 (1981).Google Scholar
  2. 2.
    M. F. Ashby and R. A. Verrall, “Nonuniform viscous flow of polycrystalline bodies and superplasticity,”Acta Met.,21(2), 53–61 (1973).Google Scholar
  3. 3.
    G. Herman, H. Gleiter, and T. Barow, “Investigation of lowenergy grain boundaries in metals by sintering,” in:Atomic Structure of Intergrain Boundaries [Russian translation], Mir, Moscow (1978), pp. 180–197.Google Scholar
  4. 4.
    S. S. Ordan'yan, “Special features of mechanical properties of sintered compositions: models of eutectics of a ‘coarse conglomerate,’” in:The Physics of Strength of Composite Materials [in Russian], FTI Im. Ioffe Akad. Nauk SSSR, Leningrad (1980), pp. 102–109.Google Scholar
  5. 5.
    S. Gregg and K. Sink,Adsorption, Surface Area, and Porosity, Academic Press, New York (1982).Google Scholar

Copyright information

© Plenum Publishing Corporation 1995

Authors and Affiliations

  • S. S. Ordan'yan
    • 1
  • S. O. Krylov
    • 1
  • E. K. Stepanenko
    • 1
  • U. A. Tsielin
    • 1
  1. 1.St. Petersburg State Technological UniversitySt. PetersburgRussia

Personalised recommendations