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引用次数: 0
摘要
对通过电子束蒸发法、热原法、液体化学法和等离子体化学法获得的二氧化硅和氧化铝纳米级粉末的平均尺寸进行了比较研究，研究方法是将它们保持在空气环境中 800-1300°C 的温度范围内。在液氮温度下，使用布鲁纳-埃美特-泰勒（BET）吸附法测量比表面积，从而估算出所得颗粒的平均尺寸。利用 X 射线衍射分析评估了处理后粉末的晶体学参数。结果表明，通过适当选择温度和初始粉末，可以使所得粉末的平均粒度接近给定粒度和相组成。
INFLUENCE OF TEMPERATURE ON THE PROPERTIES OF FREE LOADED INORGANIC OXIDE NANO POWDERS
A comparative study was carried out on the possibility of controlling the average sizes of nano-sized powders of silicon dioxide and aluminum oxide obtained by electron beam evaporation, pyrogenic, liquid chemical and plasma chemical methods, by keeping them in the temperature range of 800 – 1300 ?C in an air atmosphere. The average size of the resulting particles was estimated from specific surface area measurements using the Brunauer–Emmett–Taylor (BET) adsorption method at liquid nitrogen temperature. Crystallographic parameters in the treated powders were assessed using X-ray diffraction analysis. It has been shown that by appropriate choice of temperatures and initial powder, it is possible to achieve an average particle size in the resulting powder close to a given one and a phase composition.
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