Explosive pressing of a TiC-TiNi powder composite

V. E. Panin, A. I. Slosman, B. B. Ovechkin, M. P. Bondar', N. A. Kostyukov

Research output: Contribution to journalArticle

Abstract

Explosive pressing enables specimens of relative densities up to 95% to be obtained, whereas the maximum attainable density after static pressing does not exceed 70%. There exist optimum sintering temperatures and compact densities, which are different for the static and explosive pressing methods. It is important that the optimum temperature of sintering after explosive pressing is 150°C lower than that of sintering after static pressing. This enables the sintering of the hard metal to take place virtually in the absence of a liquid phase. Explosive pressing is performed without a plasticizer, which simplifies the preparation of the powder mixture, enables the rate of heating in sintering to be increased, and improves the conditions of operation of the sintering furnace. Compared with static pressing, the explosive method ensures an about 50% lower residual porosity, a more fine-grained structure, and higher transverse rupture strength.

Original languageEnglish
Pages (from-to)526-529
Number of pages4
JournalSoviet Powder Metallurgy and Metal Ceramics
Volume24
Issue number7
DOIs
Publication statusPublished - 1 Jul 1985

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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