کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5441526 1510389 2017 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Crystallization behavior and properties of CaO-MgO-Al2O3-SiO2 glass-ceramics synthesized from granite wastes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Crystallization behavior and properties of CaO-MgO-Al2O3-SiO2 glass-ceramics synthesized from granite wastes
چکیده انگلیسی
Granite wastes were used as the raw materials for the preparation of CaO-MgO-Al2O3-SiO2 glass-ceramics. The waste loading was about 50.24-68.34 wt% in the batch depending on the chemical compositions of glasses. Effects of SiO2/(CaO + MgO) ratio on the crystallization behavior, microstructure and properties of glass-ceramics were investigated. The results showed that the crystallization activation energy Ec increased from 322.68 to 477.10 kJ/mol, and Avrami parameter n decreased from 3.78 to 2.89 as the SiO2/(CaO + MgO) ratio increase from 1.72 to 4.99, while, the crystallinity of diopside decreased gradually, and the main crystalline phase changed into armalcolite with SiO2/(CaO + MgO) ratio increase to 4.99. The increase in SiO2/(CaO + MgO) ratio lead to the decreasing in Vicker's hardness, bending strength and alkali resistance of the glass-ceramics, but improved the acid resistance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 457, 1 February 2017, Pages 111-115
نویسندگان
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