کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1483145 1510498 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Porosity and fractality of yttria stabilized zirconia nanopowders obtained by microwave assisted synthesis and calcined at different temperature
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Porosity and fractality of yttria stabilized zirconia nanopowders obtained by microwave assisted synthesis and calcined at different temperature
چکیده انگلیسی

Yttria stabilized zirconia nanopowders have been prepared by co-precipitation method with using a microwave radiation in the process of drying with followed calcination at different temperatures (400–900 °C). Porosity and the surface fractal dimension of zirconia nanopowders have been studied by the nitrogen isotherms at 77 K. The fractal dimension of yttria stabilized zirconia was determined by the fractal Frenkel–Halsay–Hill equation and Neimark’s equation. We found that for samples calcined at temperatures in the range of 400–900 °C the surface fractal dimension is nearly constant (2.5–2.6). This indicates that the surfaces of yttria stabilized zirconia calcined at different temperatures are indeed irregular and may be described by fractal geometry in a certain range of length scale.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 356, Issues 18–19, 15 April 2010, Pages 941–944
نویسندگان
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