Transmission electron microscopy of SrO containing multi-cation doped alpha-SiAlON ceramics

Turan S., Mandal H., Kara F.

NITRIDES AND OXYNITRIDES 2, vol.383, pp.37-42, 2002 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 383
  • Publication Date: 2002
  • Doi Number: 10.4028/www.scientific.net/msf.383.37
  • Journal Name: NITRIDES AND OXYNITRIDES 2
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED)
  • Page Numbers: pp.37-42
  • Keywords: microstructure, EDX analysis, SrO-CaO doping, SrO-Yb2O3 doping
  • Anadolu University Affiliated: No

Abstract

An advantage of alpha-SiAlON is that it can accommodate cations of sintering additives and hence reduces the amount of deleterious remnant intergranular amorphous phase. However, it is believed that relatively large cations cannot enter the structure. In this work, TEM-EDX combination is used to find out whether large cations of Sr2+. can be incorporated into the alpha-SiAlON structure. The results showed that Sr2+ can enter the structure if other smaller cations of Ca2+ or Yb3+ are also present.