Effect of microstructural orientation on erosion behavior of self-reinforced silicon nitride

D. S. Lim, C. H. Cho, D. S. Park

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Erosion tests were conducted on silicon nitride containing uniaxially oriented large elongated grains using silicon carbide angular particles at impact angles from 45 to 90°. Two different impact directions were selected to investigate the effect of elongated grain orientation on erosion behavior of self-reinforced silicon nitride. Erosion weight loss after impact of SiC particles was measured and the erosion behavior depending on impact angle and grain orientation were studied. Higher erosion rate was obtained in the normal direction with respect to the aligned large grains in all tested impact angles. The erosion models based on grain pullout and lateral cracking were proposed to explain the observed anisotropic tendency in erosion behavior of self reinforced silicon nitride at the low impact angle.

Original languageEnglish
Pages (from-to)110-114
Number of pages5
JournalWear
Volume255
Issue number1-6
DOIs
Publication statusPublished - 2003 Jan 1

Keywords

  • Erosion
  • Impact angle
  • Silicon nitride
  • Unidirectionally oriented

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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