کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1486696 | 1510563 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phase separation in yttrium silicate glass prepared by the sol-gel method
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Yb2O3-10Y2O3-89SiO2 (mol%) glass was prepared by the sol-gel method. The phase evolution of the glass as a result of heat treatment was investigated. When heat-treated at 700 °C, phase separation, i.e. a spherical amorphous phase enriched with Y3+ and Yb3+ distributed separately among the glassy matrix, was observed by TEM. The immiscibility boundary of the system was determined to be between 1350 and 1400 °C. The activation energy of phase separation was evaluated to be 347 kJ/mol through non-isothermal experiments. When heated at 1150 °C for 4 h, nano-sized α-Y2Si2O7 and cristobalite crystallites were precipitated from the spherical and matrix glassy phases, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 351, Issues 37â39, 1 October 2005, Pages 3114-3120
Journal: Journal of Non-Crystalline Solids - Volume 351, Issues 37â39, 1 October 2005, Pages 3114-3120
نویسندگان
Wenqin Luo, Yuansheng Wang, Feng Bao, Yao Cheng,