Influence of Zirconia Addition on the Crystallization Kinetics of a Y-Si-Al-O-N Glass

P. Vomacka, R. Ramesh, S. Hampshire

Research output: Contribution to journalArticlepeer-review

Abstract

The crystallization behaviour of YSiAlON glasses with and without ZrO2 additives, prepared by melting at 1700°C, were studied by means of differential scanning calorimetry, scanning microscopy and X-ray powder diffraction analysis. The optimum nucleation temperatures were determined to be Tg + 65°C and Tg + 50°C for the ZrO2-free and the ZrO2-containing glass, respectively. The crystallization of the glasses was found to be dominated by the surface mechanism of nucleation and growth. The added zirconia acted as a growth modifier rather than a nucleating agent.

Original languageEnglish
Pages (from-to)1253-1262
Number of pages10
JournalJournal of the European Ceramic Society
Volume16
Issue number11
DOIs
Publication statusPublished - 1996

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