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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Porosity and fractality of yttria stabilized zirconia nanopowders obtained by microwave assisted synthesis and calcined at different temperature
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Porosity and fractality of yttria stabilized zirconia nanopowders obtained by microwave assisted synthesis and calcined at different temperature

机译：微波辅助合成并在不同温度下煅烧的氧化钇稳定的氧化锆纳米粉体的孔隙率和分形性

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摘要

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 degrees 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 degrees 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.
机译：氧化钇稳定的氧化锆纳米粉已通过在不同温度（400-900摄氏度）下干燥并随后煅烧的过程中使用微波辐射通过共沉淀法制备。通过77 K下的氮等温线研究了氧化锆纳米粉体的孔隙率和表面分形维数。通过分形Frenkel-Halsay-Hill方程和Neimark方程确定了氧化钇稳定的氧化锆的分形维数。我们发现，对于在400-900摄氏度范围内的温度下煅烧的样品，表面分形维数几乎恒定（2.5-2.6）。这表明在不同温度下煅烧的氧化钇稳定的氧化锆表面的确是不规则的，并且可以通过一定长度范围内的分形几何来描述。

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