Evaluation of α-SiC Sintering Using Statistical Methods

The effect of time and temperature on the density and strength of alpha-SiC was studied and mathematically modeled using a central composite experimental design. A sintering temperature of 2150 C for 1.7 h maximized the flexural strength and densification values. However, temperatures above 2200 C p...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 1985-07, Vol.68 (7), p.C-178-C-181
Main Authors: HURST, JANET B., MILLARD, MICHAEL L.
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Chemical industry and chemicals
Exact sciences and technology
Nonmetallic Materials
Refractory products
Special refractories
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Summary:The effect of time and temperature on the density and strength of alpha-SiC was studied and mathematically modeled using a central composite experimental design. A sintering temperature of 2150 C for 1.7 h maximized the flexural strength and densification values. However, temperatures above 2200 C promoted abnormal grain growth, with resulting appreciable decreases in strength. Flexural strength increased exponentially with increasing density for specimens with densities less than or equal to 92 percent of theoretical.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1985.tb10166.x