Sintering of Alumina at Temperatures of 1400°C. and Below

Previous investigators have indicated that both small particles and the addition of certain oxides promote the sintering of alumina at temperatures below 1700°C. By utilizing combinations of oxides and small particle size, the sintering temperature of 96% alumina bodies was reduced in this investiga...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 1957-04, Vol.40 (4), p.134-139
Main Authors: CUTLER, IVAN B., BRADSHAW, CYRIL, CHRISTENSEN, CARL J., HYATT, EDMOND P.
Format: Article
Language:English
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Summary:Previous investigators have indicated that both small particles and the addition of certain oxides promote the sintering of alumina at temperatures below 1700°C. By utilizing combinations of oxides and small particle size, the sintering temperature of 96% alumina bodies was reduced in this investigation to the 1300° to 1400°C. range. It is proposed that this low‐temperature sintering is aided by the formation of a liquid phase. Thin sections of the alumina sintered at low temperatures revealed bodies with small grain size whose bulk densities were above 3.80 gm. per cc.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1957.tb12589.x