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Liquid phase sintering of LaCrO3

✍ Scribed by Rasit Koc; Harlan U. Anderson

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
932 KB
Volume
9
Category
Article
ISSN
0955-2219

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✦ Synopsis

Solidsolutions otLal xCaxCrt yCOyO 3 were investigated to see ([eompositions close to LaCrO 3 can be sintered #7 ah" at temperatures below 1500~C. The results shows that compositions with 0"1 < x < 0"3 and 0"1 < y < 0"3 can be sintered to densities above 94% TD in air at 1400Β°C and below. The improvements in densification result from the./brmation of a transient liquid phase.

Stability studies were peJJbrmed by quenching powder samples from IO00Β°C and an oxygen partial pressure 0[" lO-lΒ° atm and sul?jecting the powders to X-ray diffi'action. X-Ray d([JFaction patterns for y < 0"30 showed no second phase, indicating that these compositions are as stable as pure LaCrO 3 towards reduction.

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