以MnO2、Fe2O3和ZnO为原料,采用机械力化学法制备锰锌铁氧体粉体.研究结果表明:颗粒粒径减小主要发生在初期,随着粉磨时间的增加,细颗粒会凝聚成团聚体,破碎与凝聚过程最后达到动态平衡;高能球磨可使原料比表面积变大,无序程度增加,键能减小,从而导致内部贮能的增加,并可得到均匀混合物,能更大程度地促进化学反应.高能球磨40h的物料,在相对较低的温度下(1200℃)煅烧即可生成单相锰锌铁氧体.对于未粉磨的样品,温度必须要达到1400℃.
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