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Vapor Growth of Al 2 O 3 Bicrystals
Author(s) -
PARKER H. S.,
HARDING C. A.
Publication year - 1970
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.1151-2916.1970.tb15976.x
Subject(s) - impurity , tilt (camera) , materials science , analytical chemistry (journal) , chemistry , crystallography , mineralogy , geometry , chromatography , mathematics , organic chemistry
Bicrystals containing symmetrical tilt boundaries with either the or the direction as the rotation axis were vapor‐grown at 1740°C using the reaction 2AlCl 3 ( g )+3CO 2 ( g ) + 3H 2 ( g )→.Al 2 O 3 ( s ) + 6HCl( g ) + 3CO( g ). Specimens as large as 3 by 5 by 20 mm were produced in 24 h. Chemical purity of the specimens is high, with <0.1 ppm total cation impurities, as determined by activation analysis.