کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1481855 | 991546 | 2011 | 6 صفحه PDF | دانلود رایگان |

Fabrication of TeO2–Bi2O3–ZnO glass ceramics with high transmittance in the near infrared (NIR) region is reported in the present work. Transparent tetragonal bipyramid crystals, tens of micrometers in size, with a refractive index closely matched to that of the glass matrix were formed using a two-step heat treatment. Nucleation- and growth-like curves for this crystal phase were determined using Differential Scanning Calorimetry (DSC). The crystalline phases present in the glass ceramics were identified via x-ray diffraction as a function of heat treatment. The lowest absorption coefficient of glass ceramic is approximately 0.5/cm in the near infrared region (1.2 to 2.8 μm).
► Glasses in the TeO2-Bi2O3-ZnO family were heat treated to form glass ceramics.
► The nucleation- and growth-like curves for the crystal phases were measured.
► Crystal fraction and phase as a function of heat treatment was examined.
► Optical and mechanical properties of the glass ceramics are presented.
Journal: Journal of Non-Crystalline Solids - Volume 357, Issue 21, 1 November 2011, Pages 3648–3653