کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7902066 1510440 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of heat treatment on the microstructure and properties of lithium disilicate glass-ceramics
ترجمه فارسی عنوان
تأثیر عملیات حرارتی بر ریزساختار و خواص لیتیوم دی لیکات شیشه ای سرامیک
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
The effect of heat treatment on microstructure and properties of SiO2-Li2O-K2O-Al2O3-ZrO2 glass-ceramics was investigated. The glasses were subjected to a multi-stage heat treatment. At the first stage at 650 °C, Li2SiO3 was the main crystalline phase of all samples, which had a dimensional change with prolonging the heating time from 3 h to 72 h. After the second stage treatment at 830 °C for 3 h, all the Li2SiO3 crystals decomposed and Li2Si2O5 crystals formed with an opposite dimensional change from that of Li2SiO3. These Li2Si2O5 crystals were small, which could contribute to forming high translucency. The third stage at 550 °C would release the internal strain and improve samples' bending strength, which could reach up to above 560 MPa. The sample treated for 48 h at the first stage had the smallest crystals and also obtained a highest real in-line transmission of 29% at 650 nm with a thickness of 1.45 mm and a bending strength above 581 ± 25 MPa.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 402, 15 October 2014, Pages 101-105
نویسندگان
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