Properties of Li2O-ZnO-Al2O3-SiO 2 glass-ceramic system prepared by spray pyrolysis

Jin Man Han, Dae Soo Jung, Jang Heui, Yun Chan Kang

Research output: Contribution to journalArticle

Abstract

Li2O-ZnO-Al2O3-SiO2 (LZAS) glass-ceramic system was studied in the high temperature spray pyrolysis. Small amount of P2O5 was used as nucleation agent. Fine-sized Li2O-ZnO-Al2O3-SiO2 glass powders with amorphous phase and spherical shape were formed by spray pyrolysis at temperatures between 1300 and 1500°C. The mean size of the glass powders prepared at a temperature of 1500°C was 0.7 μm. The glass transition temperature (Tg) of the glass powders was 551.2°C. The two crystallization exothermic peaks were observed at 703.8 and 923.8°C. Densifications of specimens occurred at sintering temperatures of 800 and 900°C, in which interconnected network microstructure was formed by tiny dendritic crystals. The specimens sintered at temperatures of 600 and 700°C had LiAl(SiO 3)2 crystal structure. On the other hand, the specimens sintered at temperatures between 800 and 1000°C had LiAlSi2O 6 (β-spodumene) crystal structure.

Original languageEnglish
Pages (from-to)407-410
Number of pages4
JournalJournal of the Ceramic Society of Japan
Volume117
Issue number1363
DOIs
Publication statusPublished - 2009 Mar

Keywords

  • Glass powder
  • Glass-ceramic
  • Sealant
  • Spray pyrolysis

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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