Mechanical properties and microstructure of reaction sintered -sialon ceramics prepared by a slip casting method

Authors: HAYAMA S.; NASU T.; OZAWA M.; SUZUKI S.

Source: Journal of Materials Science, Volume 32, Number 18, 1997 , pp. 4973-4977(5)

Publisher: Springer

Abstract:

Reaction sintered -sialon ceramics Si6-zAlzOzN8-z, were prepared by slip casting from -Si3N4, Al2O3, and AlN starting powders. The mechanical properties and microstructures of sintered bodies were investigated as a function of composition (varying the z value). The maximum value of the flexural strength, 600 MPa, and fracture toughness, 4.1 MPa m1/2 were observed in the z range of 0.5–1. In the z value range of 2–4, the mechanical properties decreased drastically. This phenomenon is attributed to the variation of fracture energy, which is greatly affected by the sintered crystallite size.

Language: English

Document Type: Regular paper

Affiliations: 1: Ceramic Research Laboratory, Nagoya Institute of Technology, 10-6-29 Asahi-ga-oka, Tajimi Gifu 507 Japan

Publication date: 1997-01-01

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• In this Subject: General & Civil Engineering
• By this author: HAYAMA S. ;  NASU T. ;  OZAWA M. ;  SUZUKI S.

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