کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9623831 456580 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An nth-order Gaussian energy distribution model for sintering
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
An nth-order Gaussian energy distribution model for sintering
چکیده انگلیسی
Although it is well known that the rate of sintering is governed by deceleratory kinetics, it is often difficult to fit power-law and nth-order reaction models over broad time-temperature ranges. This work shows that a phenomenological model combining a reaction order with an activation energy distribution can correlate surface area as a function of sintering time and temperature over a greater range of those variables. Qualitatively, the activation energy distribution accounts for the dependence of free energy on particle size and material defects, while the reaction order accounts for geometric factors such as a distribution of diffusion lengths. The model is demonstrated for sintering of hydroxyapatite using data of Bailliez and Nzihou [S. Bailliez, A. Nzihou, Chem. Eng. J. 98 (2004) 141-152].
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 108, Issues 1–2, 1 April 2005, Pages 47-50
نویسندگان
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