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Powder Metallurgy and Metal Ceramics

, Volume 43, Issue 11–12, pp 576–580 | Cite as

Compaction and structure formation during sintering of composite materials based on groups IV–V transition metal nitrides. VI. Features of sintering for composite materials of the systems MeIV–VN - Cr and MeIV–VN - Ni

  • F. F. Egorov
  • V. E. Matsera
Article

Abstract

Features that accompany sintering of composite materials based on the systems MeIV–VN - Cr and MeIV–VN - Ni in argon, nitrogen, and a vacuum are studied. It is shown that in all cases argon is the most favorable sintering atmosphere. It is established that for all materials there is typically loss of nitrogen by nitrides that is localized in closed pores, volumetric interaction of nitride-forming metal with the metal binder, intermetallic compound formation, and a volumetric increase in binder material after sintering. Structure formation occurs under the action of two solid-phase grain growth mechanisms: coalescence and dissolution — precipitation at the refractory nitride — metal interface. Sintering process recommendations are given for composite materials based on these systems.

Keywords

refractory nitride binder composite material sintering protective atmosphere compaction structure formation solution intermetallic compound recrystallization 

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Copyright information

© Springer Science+Business Media, Inc. 2004

Authors and Affiliations

  • F. F. Egorov
    • 1
  • V. E. Matsera
    • 1
  1. 1.Institute for Problems of Materials ScienceNational Academy of Sciences of UkraineKiev

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