Oxidation kinetics of aluminum nitride at different oxidizing atmosphere
作者： Xinmei Hou , Kuo-Chih Chou , Xiangchong Zhong , Seshadri Seetharaman
DOI: 10.1016/J.JALLCOM.2007.10.066
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摘要: Abstract In the present work, oxidation kinetics of AlN powder was investigated by using thermogravimetric analysis, X-ray diffraction (XRD) and scanning electron microscopy (SEM). The experiments were carried out both in isothermal as well non-isothermal modes under two different oxidizing atmospheres. results showed that reaction started at around 1100 K rate increased significantly beyond 1273 K forming porous aluminum oxide product. affected temperature oxygen partial pressure. A distinct change mechanism noticed range 1533–1543 K which is attributed to phase transformation product, viz . alumina. Diffusion controlling step during process. Based on experimental data, a new model for predicting process had been developed, offered an analytic form expressing weight increment function time, application this system demonstrated could be used describe behavior powder.
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