ZHANG Yu , LIU Meng , TANG Jiancheng

(School of Materials Science and Engineering, Nanchang University, Nanchang Jiangxi 330031)

Abstract: The hydrolysis behavior of the 500nm AlN powder at different pH was observed and its reaction products were

characterized by XRD, SEM and TEM. The results show: in the environment of pH 12, the hydrolysis products are

nanofibers; in the natural environment, the hydrolysis products are short nanorods; in the environment of pH 5, the hydrolysis is repressed. XDR shows that the hydrolysis products at 80℃ are AlOOH, SEM and TEM micrographs show a protective film can be produced from AlN at pH 5. In the environment of pH 12, ammonia can agglomerate hydrolysis products.

Key words: aluminum nitride powder; pH value; hydrolysis product; agglomeration