Preparation of Aluminum Oxynitride Powder by Solid State Reaction Method

Abstract

Single-phase aluminum oxynitride powders were obtained by varying the holding temperature (T) and the weight percentage of α-Al2O3 in Al2O3 (X) with nano-sized Al2O3 and AlN powders as raw materials. Influences of T and X on the phase composition of obtained powders were studied. The results showed that the content of aluminum oxynitride increased with increasing T or X. When X was 50% and T was 1750°C, obtained powders had better properties than those of others.

Preparation and Light Transmission Properties of AlON Ceramics by the Two-Step Method with Nanosized Al2O3 and AlN

“…Powder Properties Figure 1 shows the XRD patterns of the obtained powder calcined with nanosized Al 2 O 3 and AlN at 2023 K (1750°C) for 4 hours, which was identified as the optimal condition in our experiment. [20] As shown in the figure, the powder is single-phase AlON, indicating that the reaction with Al 2 O 3 and AlN was complete, and the temperature for single-phase formation is lower than other reports. [18,19] Bandyopadhyay et al [18] investigated the AlON powder prepared with Al 2 O 3 and AlN, and single phase was achieved at 2073 K (1800°C).…”