Formation of alpha-SiAlON ceramics containing scandium

Kurama S., Mandal H.

EURO CERAMICS VIII, PTS 1-3, vol.264-268, pp.1107-1110, 2004 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 264-268
  • Publication Date: 2004
  • Doi Number: 10.4028/www.scientific.net/kem.264-268.1107
  • Journal Name: EURO CERAMICS VIII, PTS 1-3
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1107-1110
  • Keywords: alpha-SiAlON, scandium cation, phase relationship
  • Anadolu University Affiliated: No

Abstract

alpha-SiAlON is able to accommodate cations into its crystal structure if the cations are sufficiently small in size, thus helping to reduce the volume of the remnant grain boundary phase after processing. Lutetium with an ionic radius of 0.85 Angstrom was the smallest 3+ cation which can be incorporated into alpha-SiAlON structure and the Sc+3 cation, with an ionic radius of 0.73 Angstrom was accepted too small to form an alpha-SiAlON.