کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1516118 | 1511546 | 2013 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Pressure and temperature stability range of crystalline lithium metasilicate in a binary Li2O·2SiO2 glass
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Pressure and temperature stability range of crystalline lithium metasilicate in a binary Li2O·2SiO2 glass Pressure and temperature stability range of crystalline lithium metasilicate in a binary Li2O·2SiO2 glass](/preview/png/1516118.png)
چکیده انگلیسی
The aim of this work was to investigate the formation of lithium metasilicate (Li2SiO3) under high pressure and high temperature starting from lithium disilicate glass with the stoichiometric composition Li2O·2SiO2 (LS2). Monolithic LS2 glass samples were processed at 4.25 GPa, 4.5 GPa, 5 GPa, 5.5 GPa, 6 GPa and 6.5 GPa and submitted, simultaneously, to heat treatment for nucleation and growth of the crystalline phases. The crystallization of the samples was investigated by X-ray diffraction, Raman spectroscopy and optical microscopy. In the pressure and temperature range investigated, crystalline Li2Si2O5 remained stable up to 6 GPa and the formation of the metasilicate phase Li2SiO3 started at 4.25 GPa coexisting with quartz and coesite up to 6.5 GPa. The segregation of SiO2 phases during the crystallization of Li2SiO3 was a consequence of the lithium deficiency of the starting LS2 composition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Physics and Chemistry of Solids - Volume 74, Issue 8, August 2013, Pages 1179-1183
Journal: Journal of Physics and Chemistry of Solids - Volume 74, Issue 8, August 2013, Pages 1179-1183
نویسندگان
Silvio Buchner, Naira Maria Balzaretti,