کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1480299 1510400 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Non-isothermal crystallization kinetics of stoichiometric lithium disilicate-based glasses with Al2O3 additives
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Non-isothermal crystallization kinetics of stoichiometric lithium disilicate-based glasses with Al2O3 additives
چکیده انگلیسی
In this study, a rapid and simple calculation procedure to determine the non-isothermal crystallization kinetic parameters of a glass was proposed based on the work of Matusita et al. The crystal growth index (n) was firstly determined with the equation proposed by Matusita in 1979 and the value of morphology index (m) could be determined according to the relationship between n and m. The activation energy for crystal growth was determined using the modified-Kissinger equation proposed by Matusita in 1980. To verify the validity of this efficient and rapid method, four compositions in the Li2O-SiO2-Al2O3-P2O5 glass system were investigated by scanning electron microscopy (SEM) and X-ray diffractometry (XRD). The crystallization mechanisms as identified by the characterization show good agreement with those predicted by the new calculation procedure, verifying the validity of the calculation procedure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volumes 445–446, 1 August 2016, Pages 116-122
نویسندگان
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