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METHOD OF PRODUCING NANOCRYSTALLINE POWDER OF ZIRCONIUM DIOXIDE
METHOD OF PRODUCING NANOCRYSTALLINE POWDER OF ZIRCONIUM DIOXIDE
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机译:二氧化锆纳米粉体的制备方法
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摘要
FIELD: chemistry.;SUBSTANCE: invention relates to technology of inorganic materials, particularly to methods of producing nanocrystalline powder of zirconium dioxide, stabilised with additives of rare-earth elements, and can be used for production of catalysts and sorbents, technical ceramics for various purposes (heat-shielding materials, solid electrolytes for solid oxide fuel cells and so on). Described is a method of producing zirconium dioxide nanopowder, involving deposition of zirconium hydroxide with addition of rare-earth element, simultaneous drying and calcining of flushed precursor paste in a microwave oven under effect of microwave radiation with fixed frequency of 2,450 MHz, where deposition step is carried out using additive of dysprosium ions in amount of 7-10 mol% Dy2O3, wherein microwave radiation power is 1.5 kW, process time is 3.5 hours at temperature 800 °C.;EFFECT: technical result is obtaining single-phase, nanocrystalline, low-aggregated zirconium dioxide powder with cubic structure.;1 cl, 2 dwg, 2 ex
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机译:技术领域本发明涉及无机材料技术,尤其涉及用稀土元素的添加剂稳定化的二氧化锆纳米晶粉的制备方法,可用于催化剂和吸附剂的生产,各种工业用陶瓷。用途(隔热材料,用于固体氧化物燃料电池的固体电解质等)。描述了一种生产二氧化锆纳米粉的方法,该方法包括沉积氢氧化锆和添加稀土元素,在固定频率为2,450 MHz的微波辐射的作用下,在微波炉中同时干燥和煅烧冲洗过的前体糊状物,其中沉积步骤使用using离子添加剂的量为7-10 mol%Dy 2 Sub> O 3 Sub>进行,其中微波辐射功率为1.5 kW,温度下处理时间为3.5小时800°C;效果:技术成果是获得具有立方结构的单相纳米晶低聚集二氧化锆粉末; 1 cl,2 dwg,2 ex
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