Properties of Si3N4/SiC composites produced via spark plasma sintering


Taslicukur Z., Sahin F. C. , Kuşkonmaz N.

INTERNATIONAL JOURNAL OF MATERIALS RESEARCH, cilt.103, ss.1337-1339, 2012 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 103
  • Basım Tarihi: 2012
  • Doi Numarası: 10.3139/146.110779
  • Dergi Adı: INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
  • Sayfa Sayısı: ss.1337-1339

Özet

Si3N4 ceramics reinforced with SiC particles were fabricated via spark plasma sintering at 1 650 degrees C under 40 MPa pressure. AlN and Y2O3 were used as sintering additives. The purpose of this work was to study the influence of SiC powders on the properties of Si3N4/SiC composites. The microstructure, phase composition, and mechanical properties of the composites were investigated. It was found that mechanical properties of the composites improved, the a alpha-beta transformation and grain growth of beta-Si3N4 were inhibited and the equiaxed grain increased due to the increase of SiC(w).