کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1459233 989591 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Crystallization behavior of bismuth oxide nano-glass studied via in situ transmission electron microscopy
ترجمه فارسی عنوان
رفتار بلوری کردن نانو شیشه ای بیسموت اکسید توسط میکروسکوپ الکترونی انتقال در محل مورد بررسی قرار گرفت
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی

The substitution of bismuth oxide for lead in glass and decreasing the particle size of glass powders to the nanoscale have both attracted considerable interest as techniques for decreasing the maximum firing temperature and alleviating environmental problems. However, crystallization during firing is an issue that needs to be solved. In this study, we investigated the sintering behavior of nanosized bismuth oxide glass and the mechanism of its crystallization. The crystallization behavior during sintering was analyzed by hot-stage microscopy. The microscopic sintering interaction between individual nanoglass particles was observed by in situ transmission electron microscopy. The glass softening and densification starting temperatures were dramatically decreased when decreasing the particle size from micro to nanoscale. Based on this study, the bloating of nanostructured bismuth oxide glass starts at 370 °C. This corresponds with the dissociation temperature of bismuth oxide. Therefore, the bloating phenomenon during the sintering of the nanoglass powder is attributed to the thermal dissociation of bismuth oxide.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 41, Issue 2, Part A, March 2015, Pages 2196–2201
نویسندگان
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