The effect of different nucleation temperatures on the grain morphology of alpha-SiAlON ceramics

Kushan S., Mandal H.

SIAIONS, vol.237, pp.169-173, 2003 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 237
  • Publication Date: 2003
  • Doi Number: 10.4028/www.scientific.net/kem.237.169
  • Journal Name: SIAIONS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED)
  • Page Numbers: pp.169-173
  • Keywords: grain morphology, nucleation temperature, nucleation time, alpha-SiAlON
  • Anadolu University Affiliated: No

Abstract

Nitrogen rich yttrium-cerium containing multi-cation alpha-SiAlON starting compositions were prepared by gas pressure sintering using conventional alpha-Si3N4 powder. Microstructural characterization of the two stage sintered materials resulted in elongated. alpha-SiAlON in various conditions. The effect of different nucleation temperatures at 1400; 1500 and 1600degreesC and times for 5 and 20 minutes on the grain morphology of alpha-SiAlON ceramics were investigated.