摘要
以Fe2O3、Mn3O4和ZnO为原料,采用高能球磨法成功制备了Mn-Zn铁氧体,并利用XRD、SEM以及VSM等测试技术对样品进行了表征。研究了预烧温度对铁氧体相的形成过程以及烧结铁氧体材料的显微结构和磁性能的影响。结果表明,随着预烧温度的升高,预烧粉体的颗粒尺寸逐渐增大,起始磁导率和饱和磁化强度均呈现先增大后减小的趋势。适宜的预烧温度为850℃,高于或低于此温度,烧结铁氧体材料的显微结构和磁性能都会恶化。
Mn-Zn ferrites are prepared by high-energy ball milling method using Fe2O3, Mn3O4 and ZnO as raw materials, and are characterized by XRD, SEM and VSM. The effects of pre-sintering temperature on phase formation process of ferrites, microstructure and magnetic properties of sintered Mn-Zn ferrites are investigated. Results show that the particle size of the pre-sintered powder increases with the increase of pre-sintered temperature. The initial per- meability and saturation magnetization of sintered ferrites increase first, and then decrease. The best microstructure and magnetic properties can be obtained at the suitable pre-sintered temperature of 850℃, and bellow or above this temperature, the microstructures and magnetic properties of sintered ferrites become worse.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2009年第12期8-10,共3页
Materials Reports
基金
国家自然科学基金-广东省联合基金重点项目(U0734001)
国家自然科学基金(50874050)
广东省科技计划(2004B10301009
2006A11002001
2007B010600007
2007B010600043)
广州市科技计划(2002Z2-D2021
2005Z3-D2061
2006Z2-D0131)
关键词
高能球磨
铁氧体
磁性能
high-energy ball milling, Mn-Zn ferrite, magnetic properties
