应用化学 ›› 1997, Vol. 0 ›› Issue (2): 110-112.
• 研究论文 • 上一篇 下一篇
魏雨, 刘晓林, 郑学忠
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Wei Yu, Liu Xiaolin, Zheng Xuezhong
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摘要： 无极(Non-polar)磁粉 γ-Fe2O3 由于在高密度记录、高保真及温度稳定好等方面有着卓越的性能, 如内部不产生磁极、表面光滑及分散性好. 不但适用于平行记录, 也适合于垂直记录[ 1], 是一种理想的磁记录材料。
关键词: 纺锤形α－Fe2O3, 空气氧化法, Fe(OH)2
Abstract: γ-FeOOH crystals were grown from FeSO4 by the air oxidation of ferrous hydroxide suspension in the presence of EDTA, and then 100% spindle α-Fe2O3 particles were prepared by adding 0.0025 mol/L hydroxyethylidene diphosphonic acid(HEDP)at 90～95℃. The mean particle length is 150～180 nm and the axial ratio is 3.5～3.8. A series of experiments were carried out with HEDP concentrations ranging from 0.0015 to 0.003 mol/L. The effect of HEDP concentration on α-Fe2O3 morphology is discussed.
Key words: spindel α-Fe2O3, air oxidation, Fe(OH)2
魏雨, 刘晓林, 郑学忠. 无极磁粉的制备 1.亚铁盐空气氧化直接合成纺锤形α-Fe2O3[J]. 应用化学, 1997, 0(2): 110-112.
Wei Yu, Liu Xiaolin, Zheng Xuezhong. Preparation of Non-polar Magnetic Powder 1.Direct Synthesis of Spindle α-Fe2O3 from FeSO4 by Air Oxidation[J]. Chinese Journal of Applied Chemistry, 1997, 0(2): 110-112.
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