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Synthesis and Characterization of a High‐Purity AlN Powder
Author(s) -
HUSEBY IRVIN C.
Publication year - 1983
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.1151-2916.1983.tb10021.x
Subject(s) - materials science , characterization (materials science) , oxygen , specific surface area , chemical engineering , nuclear chemistry , chemistry , catalysis , nanotechnology , organic chemistry , engineering
High‐purity AIN powder was synthesized by preparing high‐purity (NH 4 ) 3 AIF 6 , decomposing the (NH 4 ) 3 AIF 6 to AIF 3 , and reacting the AIF, at 800° to 1000°C with high‐purity NH 3 . AIN powders could be synthesized with a cation purity of 99.99% and an oxygen content <0.2 wt%. The specific surface area depended on the process conditions and varied from 0.2 to 2.6 m 2 /g. The thermodynamics of the process are evaluated and the influence of various process parameters on the resulting powder characteristics are described.