引用本文:
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, 14(2): 110-112.
Citation: 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, 14(2): 110-112.
Citation: 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, 14(2): 110-112.
无极磁粉的制备1.亚铁盐空气氧化直接合成纺锤形α-Fe2O3
摘要:
无极(Non-polar)磁粉V-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.
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关键词:
- 纺锤形T-Fe2O3
- / 空气氧化法
- / Fe(OH)2
English
Preparation of Non-polar Magnetic Powder 1.Direct Synthesis of Spindle α-Fe2O3 from FeSO4 by Air Oxidation
Abstract:
V-FeOOH crystals were grown from FeSO4 by the air oxidation of ferrous hydroxide suspension in the presence of EDTA, and then 100% spindle T-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 T-Fe2O3 morphology is discussed.
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Key words:
- spindel T-Fe2O3
- / air oxidation
- / Fe(OH)2
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