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Sintering of Alumina at Temperatures of 1400°C. and Below
Author(s) -
CUTLER IVAN B.,
BRADSHAW CYRIL,
CHRISTENSEN CARL J.,
HYATT EDMOND P.
Publication year - 1957
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1957.tb12589.x
Subject(s) - sintering , materials science , liquid phase , grain size , particle size , phase (matter) , atmospheric temperature range , metallurgy , particle (ecology) , chemical engineering , composite material , mineralogy , chemistry , meteorology , physics , oceanography , organic chemistry , engineering , thermodynamics , geology
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.