Deformation and fracture of β-silicon nitride micropillars

Tamás Csanádi, Nguyen Q. Chinh, Péter Szommer, Ján Dusza, Zoltán Lenčés, Pavol Šajgalík

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Room-temperature deformation and fracture behaviors under microcompression of single crystal β-silicon nitride (Si3N4) micropillars were investigated. Pillars were fabricated by focused ion beam (FIB) in large Si3N4 grains, located close to the basal and prismatic orientations, selected by electron backscatter diffraction (EBSD). The micromechanical test and the damage characterization were performed by nanoindentation and scanning electron microscopy (SEM), respectively. The elastic, plastic, and fracture properties, such as Young's modulus, yield stress, and rupture stress are considerably influenced by the pillar orientation. The activation of the {101¯0}[0001] type slip system was identified in case of basal oriented micropillars.

Original languageEnglish
Pages (from-to)374-377
Number of pages4
JournalJournal of the American Ceramic Society
Volume98
Issue number2
DOIs
Publication statusPublished - Dec 3 2014

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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