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应用科学学报 ›› 1992, Vol. 10 ›› Issue (3): 215-220.

• 论文 • 上一篇    下一篇

纺锤形α-Fe2O3微粒的合成研究

曾桓兴, 任福民   

  1. 中国科学技术大学
  • 收稿日期:1990-04-09 出版日期:1992-09-30 发布日期:1992-09-30

THE STUDY OF PREPARATION OF SPINDLE-TYPE HEMATITE PARTICLES

ZENG HUANXING, REN FUMIN   

  1. University of Science and Technology of China
  • Received:1990-04-09 Online:1992-09-30 Published:1992-09-30

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摘要： 研究了使用NaH2PO4作生长助剂,利用Fe(NO3)3水溶液强力水解制备纺锤形α-Fe2O3微粒的较适宜条件.发现在沸腾回流的动态环境下,可以实现较高Fe(NO3)3浓度和较短水解时间内完成纺锤形α-Fe2O3粒子的合成.这对实现无极磁粉新的合成方法和均匀胶体粒子制备具有重要意义.

关键词: α-Fe2O3微粒, 水解合成, 纺锤形

Abstract: This paper studied the effective factors for the preparation of spindle-type hematite particles by forced hydrolysis of ferric nitrate at elevated temperatures. A small quantity of phosphate ions were added into such a system before ageing. It was found that spindle-type hematite particles could be obtained in high ferrio nitrate concentration within a shorter preparation time, which is advantageous for the realization of the production of NP magnetic particles by a new preparation way.

Key words: hematite, spindle-type particles, forced hydrolysis preparation