Investigation of isothermal oxidation of AlN ceramics using different kinetic model

The oxidation kinetics of AlN ceramics under the conditions of different rate-controlling steps existing has been discussed using two kinds of models (the model used in the literature and Chou model) based on the results reported in literatures. The analysis shows that though both models can be used to describe the oxidation behavior of AlN ceramics, Chou model is preferred. It is because, not only Chou model can give a clear physical meaning in expressing all parameters that will be convenient for theoretical discussion, but also it will perform a simple calculation. The most important thing is that the new model will lead to a more accurate calculation result. (C) 2008 Elsevier Ltd. All rights reserved.