Microstructure, mechanical and thermal properties of chalcogenide glasses and glass-ceramics based on Se-As-Ge system nucleated by Sn
Author(s):
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
In particular, chalcogenide glasses and glass-ceramics are new materials that exhibit good transparency in infrared region (0.8-12µm). We can overcome the main weakness of these glasses by improving the hardness through controlling crystallization. In this paper, we report results of a study on chalcogenide glasses in the ternary system of As-Se-Ge with nominal composition of Snx (Se0.6As0.1Ge0.3)100-x (x=0, 2, 4 and 6 mol %) which is suitable for use in optical devices. Melt quench technique was used for preparing alloy specimens. Glass-ceramics were made using an appropriate heat-treatment temperature and time from Snx (Se60As10Ge30)100-x glasses in order to improve the mechanical properties. The temperature of the heat treatment started with the peak temperature (Tp) for glasses and different characteristics of prepared glasses such as glass transition temperature, hardness, density, transmittance, and microstructure were determined. Initially, Tg temperature was decreased with the addition of Sn, but with an increase of Sn up to 6 mol%, Tg was increased due to structural cohesion and formation of long chains of selenium. In this study, the highest value of the hardness for the Se60Ge30As10Sn6 glass was obtained after heat treatment and forming a crystalline phase while maintaining the initial transmittance.
Keywords:
Language:
English
Published:
Advanced Ceramics Progress, Volume:5 Issue: 1, Winter 2019
Pages:
15 to 22
magiran.com/p2038210
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یکساله به مبلغ 1,390,000ريال میتوانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
- حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران میشود.
- پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانههای چاپی و دیجیتال را به کاربر نمیدهد.
In order to view content subscription is required
Personal subscription
Subscribe magiran.com for 70 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!