Departmental Papers (MSE)

Document Type

Journal Article

Date of this Version

June 2004

Comments

Copyright The American Ceramic Society. Reprinted from Journal of the American Ceramic Society, Volume 87, Issue 6, June 2004, pages 1040-1046.

Abstract

Single-phase small crystals of Li-, Mg-, Ca-, Y-, Nd-, and Yb-α-SiAlONs have been obtained by liquid-phase sintering for various compositions and processing conditions. These crystals are suitable for seeding grain growth in α-SiAlON ceramics. The influence of chemical and processing parameters (starting composition and powders, green density, liquid content, heating schedule, nitrogen pressure, and temperature) on the size and morphology of seed crystals has been investigated. The results are compared with those for β-Si3N4 crystal formation, and the differences are discussed in terms of nucleation and growth kinetics during liquid-phase sintering.

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Date Posted: 01 December 2004

This document has been peer reviewed.