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Effect of Polynuclear Complex Content on the Synthesis of Aluminum Nitride from Aluminum Polynuclear Complex
Author(s) -
Hashirnoto Noboru,
Deki Shigehito,
Yato Hisanari,
Kanaji Yukio
Publication year - 1994
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.1151-2916.1994.tb09767.x
Subject(s) - calcination , nitride , aluminium , crystallite , particle size , reactivity (psychology) , chemistry , grain size , aqueous solution , particle (ecology) , metal , particle size distribution , specific surface area , chemical engineering , chloride , inorganic chemistry , materials science , crystallography , metallurgy , organic chemistry , catalysis , medicine , alternative medicine , oceanography , layer (electronics) , pathology , engineering , geology
Aluminum nitride powders were synthesized from an aluminum polynuclear complex and glucose. Basic aluminum chloride (BAC) was used as the aluminum polynuclear complex. The effect of the polynuclear complex content on the nitridation reaction and particle size of the AIN powder synthesized was investigated. BAC solutions with various polynuclear complex contents were synthesized using an aqueous solution prepared from AlCl 3 and Al metal with various compositions. In this system, AlN was synthesized through γ‐Al 2 O 3 as an intermediate regardless of the polynuclear complex content. Polynuclear complex content affects the reactivity of nitridation and the particle size of the synthesized AIN powder. The reactivity of nitridation and specific surface area of the products increased with the polynuclear complex content. When the precursor with a polynuclear complex content of 94% was calcined at 1400°C, the AlN content reached 95%. Crystallite size by X‐ray diffraction measurement and particle size calculated from the specific surface area for the products were in good agreement, indicating that AlN particles formed in the synthesis process are in the form of single crystals. AlN powder synthesized from the precursor with a polynuclear complex content above 80% had a fine particle size and narrow size distribution.