Cubic AlN Synthesized by High Energy Ball Milling and Its Phase Conversion at High Temperature

doi:10.3724/SP.J.1077.2006.00821

Abstract

Abstract: The phase conversion of Al₂O₃ during high-energy ball milling was investigated. After 20h milling, amorphous and AlN were observed in powders, these were not reported previously. The crystal structure of AlN gained during ball milling is cubic, differs from that of the regular hexagonal AlN synthesized with carbothermal reduction. AlON phase forms by the reaction of cubic AlN and γ-Al₂O₃ after annealing in N₂ atmosphere at the temperature above 500℃. The formation of AlON phase decreases the commencing temperature of AlN.

Key words: cubic aluminum nitride, alumina, high energy ball milling, AlON

CLC Number:

TQ174

LI Peng-Liang,ZHOU Jing-En,XI Sheng-Qi. Cubic AlN Synthesized by High Energy Ball Milling and Its Phase Conversion at High Temperature[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2006.00821.

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Cubic AlN Synthesized by High Energy Ball Milling and Its Phase Conversion at High Temperature

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