کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1476495 991154 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Stability of the δ-TeO2 phase in the binary and ternary TeO2 glasses
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Stability of the δ-TeO2 phase in the binary and ternary TeO2 glasses
چکیده انگلیسی

The stability of δ-TeO2 phase was studied in binary TeO2–WO3, TeO2–CdO and ternary TeO2–WO3–CdO glasses. The samples were prepared by heating high purity powder mixtures of TeO2, WO3 and/or CdO to 800 °C in a platinum crucible with a closed lid, holding for 30 min and quenching in water bath. Differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques were used to characterize the thermal, phase and microstructural properties of the δ-TeO2 phase. The addition of CdO into the tellurite glasses increased the stability range of the δ-TeO2 phase up to higher temperature values and expanded the compositional δ-TeO2 formation range. The formation of δ-TeO2 phase in the binary systems was observed for samples containing 5–10 mol% WO3 and 5–15 mol% CdO. However, for the ternary TeO2–WO3–CdO system the formation of δ-TeO2 phase was determined in a wider compositional range.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 30, Issue 15, November 2010, Pages 3087–3092
نویسندگان
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