Manufacture and compositional analysis of silicon nitride composites with different carbon additions

Research output: Contribution to journalArticle

Abstract

Carbon black and graphite nano/micrograins and sintering additives (Al 2O3 and Y2O3) were added to silicon nitride starting powder. These mixtures were mechanochemically activated several hours in a planetary type alumina ball-mill in order to achieve a homogenous mass. As an alternative to nano- and micrograins, carbon fibres were added to carbon free silicon nitride batches. After dry pressing of rectangular bars sinter-HIP was applied. Structural, morphological and compositional analyses were performed on as-prepared samples. Bending strength and elastic modulus were found to be influenced by amount of carbon black and graphite introduced in silicon nitride matrix.

Original languageEnglish
Pages (from-to)5-9
Number of pages5
JournalKomunikacie
Volume6
Issue number1
Publication statusPublished - Jun 10 2004

ASJC Scopus subject areas

  • Transportation
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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