journal article·2016-07

Evolution of aluminum hydroxides at the initial stage of aluminum nitride powder hydrolysis

Enhui Wang, Junhong Chen, Xiaojun Hu, Kuo-Chih Chou, Xinmei Hou

Ceramics International· Volume 42· Issue 9
Publisher page

Abstract

Abstract Aiming at better understanding and controlling the hydrolysis process of aluminum nitride (AlN), the evolution of aluminum hydroxides in AlN powder suspensions (2 wt%) at 60 °C at initial stage, i.e. 0–2 h was systematically investigated. The hydrolysis exhibits three interdependent stages including incubation time (first stage), formation, growth and transformation of boehmite (second stage), and formation and growth of bayerite (third stage). The incubation stage is caused by the dissolution of aluminum hydroxide compound on the surface of AlN powder. The formation and growth of boehmite and bayerite are characterized using various techniques including XRD, FT-IR, Raman, SEM and TEM. Based on these results, a clear schematic conversion diagram of the hydrolysis process of AlN powder at initial stage is presented.
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Research context

OpenAlex topics: Advanced ceramic materials synthesis · Magnesium Oxide Properties and Applications · Semiconductor materials and devices

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