烧结工艺对MnZn铁氧体磁性能的影响  

Effect of Sintering Process on the Magnetic Properties of MnZn Ferrites

作　　者：况佳[1] 陈世钗[1] 罗俊[1] 张怀武[1] 

机构地区：[1]电子科技大学电子薄膜与集成器件国家重点实验室,四川成都610054

出　　处：《磁性材料及器件》2008年第5期48-50,共3页Journal of Magnetic Materials and Devices

基　　金：国家自然科学杰出青年基金资助项目(60425102);科技部国际合作项目(2006DFA53410)

摘　　要：在钟罩式气氛烧结炉中烧结高导MnZn铁氧体材料。研究发现,掺入适量的CaCO3和Bi2O3能改善材料的磁性能。烧结过程中烧结温度的增高可以促进晶粒长大,有利于提高起始磁导率;烧结气氛对离子电价和晶相形成有着决定性影响,选择合适烧结工艺是制备优质MnZn铁氧体的关键。MnZn ferrites of high permeability was prepared by sintering it in the top-hat atmosphere furnace. It was found that, proper amount of CaCO3 and Bi2O3 addition can improve the magnetic property of the material. Increase of sintering temperature would be benefit to the increasing of initial permerbility and the growing of crystal grain; sintering atmosphere have critical influence on the ionic valence and the crystal grain, so it is important to choose proper simering atmosphere to the production of prime MnZn ferrites.

关 键 词：MNZN铁氧体 烧结工艺 氧分压 起始磁导率 

分 类 号：TM277.1[一般工业技术—材料科学与工程]