Synthesis of AIN Nanopowder from γ-Al2O3 by Reduction–Nitridation in a Mixture of NH3–C3H8

Tomohiro Yamakawa

Tomohiro Yamakawa

Graduated School of Environment and Information Sciences, Yokohama National University, Yokohama 240-8501, Japan

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Junichi TatamiToru WakiharaKatsutoshi KomeyaTakeshi MeguroKenneth J. D. MacKenzie

Kenneth J. D. MacKenzie

School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington, New Zealand

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Shinichi Takagi

Shinichi Takagi

Kanagawa Industrial Technology Research Institute, Evina 243-0435, Japan

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Masahiro Yokouchi
First published: 01 December 2009

Summary

Aluminum nitride (AlN) powders were synthesized by gas re-duction-nitridation of Y-AI2O3 using NH3 and C3H8 as the re-actant gases. This chapter focuses on the synthesis mechanism of AlN from A1203 have been carried out, based on phase analysis and microstructural observations using X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). 27Al MAS NMR has also been used to investigate the formation mechanism of oxynitride ceramics such as AlON28'29 and SiAlON.30-33 NMR spectroscopy should also provide useful information on the formation of AlN by gas reduction-nitridation of y-Al203. The purpose of the chapter is to investigate the formation mechanism of nano AlN particles from a transition alumina, by gas reduction-nitridation using several analytical techniques including 27Al MAS NMR.

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