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Self-reinforcement in Li-α-sialon ceramics

Lookup NU author(s): Zhengbo Yu, Emeritus Professor Derek Thompson

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Abstract

Self-reinforcement of Li-α-sialon ceramics by in situ growth of elongated α and β-sialon grains has been explored and analysed. Properties of Li-α-sialon ceramics are mainly determined by the overall starting composition and the crystalline modification of the starting Si3N4 powder which in turn determine the final microstructure of the materials. Both the morphology and crystalline phase of the elongated sialon grains have strong effects on the toughening mechanism. The results indicate that α-sialons reinforced by elongated β-sialon grains have advantages over similar materials reinforced by elongated α-sialon grains because of the type of crack deflection toughening mechanism involved.

Publication metadata

Author(s): Thompson DP; Yu ZB; Bhatti AR

Publication type: Article

Publication status: Published

Journal: Journal of Materials Science

Year: 2001

Volume: 36

Issue: 14

Pages: 3343-3353

ISSN (print): 0022-2461

ISSN (electronic): 1573-4803

Publisher: Springer

URL: http://dx.doi.org/10.1023/A:1017931222150

DOI: 10.1023/A:1017931222150

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