升温速率和烧结温度对纳米晶MnZn粉体直接制备功率铁氧体性能的影响  

Effect of heating rate and sintering temperature on the properties of MnZn power ferrites fabricated directly by nano-crystalline powder

作　　者：张守华[1] 郁黎明[1] 张建花[1] 赵新洛[1] 

机构地区：[1]上海大学物理系,低维碳材料及器件物理研究所,上海200444

出　　处：《功能材料》2010年第8期1435-1438,共4页Journal of Functional Materials

基　　金：上海大学研究生创新基金资助项目(SHUCX092017)

摘　　要：采用纳米晶粉体直接造粒压制成块材烧结的方法制备MnZn铁氧体,研究了不同的升温速率和烧结温度对样品微观结构、磁性能的影响。研究表明,与传统的制备方法相比,直接烧结纳米晶MnZn铁氧体粉体,可以降低烧结温度。采用低的升温速率有利于提高样品的密度和初始磁导率,降低比损耗因子,并且低温烧结可以形成良好的微观结构和磁性能。The power MnZn ferrites were fabricated directly by nano-crystalline powder,and the effect of heating rate and sintering temperature on the microstructure and magnetic properties of power MnZn ferrites was investigated. The results showed that the sintering temperature decreased when the nano-crystalline powder was directly sintered compared with the traditional fabrication method. The high density,initial permeability and low specific loss were obtained at low heating rate. In addition,the fine microstructure and magnetic properties were also obtained at low sintering temperature.

关 键 词：MNZN铁氧体 烧结温度 纳米粉体 微观结构 磁性能 

分 类 号：TM27[一般工业技术—材料科学与工程]