کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10624155 989584 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fabrication of non-oxide ceramic powders by carbothermal-reduction from industrial minerals
ترجمه فارسی عنوان
تولید پودرهای سرامیکی غیر اکسید توسط کاهش کربوترمال از مواد معدنی صنعتی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
The most promising method for obtaining a large variety of non-oxide products having important technical uses is carbothermal-reduction reaction (CRR). By using this procedure, SiC and ZrC/SiC powders are obtained from diatomaceous earth and zircon powder. In this way the synthesized powders are obtained at a relatively low temperature due to good homogenization. Starting C/ZrSiO4 admixtures having different molar ratios (3:1, 4:1, 5:1 and 7:1) and C/SiO2 having ratios 1:1, 3:1, 4:1, and 7:1 were heated at temperatures between 1300 and 1600 °C in a controlled Ar flow atmosphere. The phase evolution was a function of the raw materials molar ratios and sintering temperature. The optimal parameters for the synthesis of SiC and ZrC/SiC powders were obtained. The results obtained by EDS analysis are in good agreement with those obtained by XRD analysis for the synthesized carbide powders.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 42, Issue 7, 15 May 2016, Pages 8128-8135
نویسندگان
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