Abstract: Aiming at the secondary ball milling problem of permanent ferrite, the effect of different ambient temperature on the wet milling of hard ferrite powders was analyzed. The results show that in an environment of high temperature, the efficiency of ball milling is high. The more coarse particles and fine particles exist, the more lattice defects appear. Reduced milling time and magnetic properties, decreased yield and increased sintering shrinkage are thereby caused. The above situation is particularly evident in the case of relatively larger mass ratio of ball to ferrite.

Keywords: permanent ferrite; ball milling; ambient temperature; magnetic property; milling efficiency

中图分类号：TM277          文献标志码：A

文章编号：1008-5548(2014)01-0043-04

DOI:10.3969/j.issn.1008-5548.2014.01.010

收稿日期： 2013-05-05， 修回日期：2013-08-21，在线出版时间：2014-02-24。

第一作者简介：丁文澜（1964—），男，工程师，主要从事磁性材料的应用和研究。 电话：13605168827， E-mail:13605168827@163.com。