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Novel Way to Synthesize Nanocrystalline Aluminum Nitride from Coarse Aluminum Powder
Author(s) -
Qiu Yu,
Gao Lian
Publication year - 2003
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.1151-2916.2003.tb03452.x
Subject(s) - nanocrystalline material , materials science , aluminium , impurity , nitride , nanoparticle , chemical engineering , metallurgy , nanotechnology , chemistry , organic chemistry , layer (electronics) , engineering
A new process has been developed for the synthesis of nanocrystalline AlN powder by the nitridation of coarse aluminum powder in flowing NH 3 gas, using NH 4 Cl and KCl as additives. The resulting powders have been characterized using XRD, TEM, and XRF techniques. XRD‐pure AlN nanoparticles with a diameter of 10–20 nm can be obtained by nitridation at 1273 K for 5 h. NH 3 is proved to eliminate the effect of water impurity. The effects of the additives on the conversion of aluminum are also discussed.