摘要
采用传统陶瓷工艺制备了高磁导率MnZn铁氧体材料。从分析材料微观结构入手,研究了P2O5和Nb2O5的掺入,组以适配的工艺条件和不同的比例掺入,来研究对高磁导率MnZn铁氧体材料性能的影响。少量P2O5掺杂可使铁氧体晶粒尺寸增大,均匀性改善,起始磁导率提高。但若掺杂过量,晶粒中气孔率增加,起始磁导率下降,损耗也大为增加。在配方为Zn0.15Mn0.78Fe2.07O4的材料中,当P2O5掺杂量为0.16%(wt)时,起始磁导率可达10697。Nb2O5的添加起到细化晶粒的作用,可以改善材料的频率特性,降低材料损耗,磁导率稍有降低,但当Nb2O5的质量分数>0.005%时,会显著降低材料的起始磁导率。
The sample of MnZn ferrite with High-permeability were prepared by conventional ceramic processing techniques.In proper technological conditions and different additional proportion,the effects of adding P_2O_5 and Nb_2O_5 on the high-permeability MnZn ferrites were studied on the basis of microstructure analysis.We can concluded that a small quantity of P_2O_5 addition could increased the diameter of crystalline grains,improved uniformity and initial permeability.If excessive P_2O_5 is added,porosity and co...
出处
《化工新型材料》
CAS
CSCD
北大核心
2006年第S1期55-58,共4页
New Chemical Materials
