淡江大學機構典藏:Item 987654321/44158
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    题名: Preparation of NiFe2O4 powder by spray pyrolysis of nitrate aerosols in NH3
    作者: Yu, Hsuan-fu;Gandalla, Ahmed M.
    贡献者: 淡江大學化學工程與材料工程學系
    日期: 1996-03
    上传时间: 2010-03-09 09:59:30 (UTC+8)
    出版者: New York: Cambridge University Press
    摘要: To avoid the formation of hollow spheres during spray pyrolysis, NH3 was employed to change the mechanism of forming NiFe2O4 from aerosols, containing Ni(II) and Fe(III) nitrates in the required stoichiometric ratio. Nearly spherical, solid submicron NiFe2O4 particles with narrow size distribution were produced in one step using a dilute aqueous solution at pyrolysis temperatures as low as 823 K. However, higher pyrolysis temperatures (≥1023 K) reduced the oxides to metallic alloy of Ni and Fe due to dissociation of NH3. The forming steps and possible reaction mechanisms for aerosol droplets involved in the process were discussed.
    關聯: Journal of materials research 11(3), pp.663-670
    DOI: 10.1557/JMR.1996.0080
    显示于类别:[化學工程與材料工程學系暨研究所] 期刊論文

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