作　　者： ; ; ;

机构地区： 西安建筑科技大学材料科学与工程学院

出　　处： 《电子元件与材料》 2008年第3期58-60,共3页

摘　　要： 运用Bi2O3-Nb2O5复合掺杂的陶瓷工艺,制备了NiCuZn铁氧体。从其微观结构出发,采用SEM分析手段,研究了Bi2O3-Nb2O5复合掺杂对NiCuZn铁氧体性能的影响。结果表明:适量的Bi2O3-Nb2O5复合掺杂,既有利于细化晶粒、促进晶粒均匀致密,又提高了品质因数Q,其磁性能明显优于单独掺杂。在掺杂总量的质量分数为0.5%、烧结温度为900℃、ζ(Bi2O3:Nb2O5)为7:3时,铁氧体的密度ρ为5.15g/cm3、起始磁导率μi为820.9、Q值可达110.5。 NiCuZn ferrite was prepared by ceramic process with Bi203-Nb205 composite doping. Starting with analyzing of microstructure, effects of Bi203-Nb205 composite doping on the properties of NiCuZn ferrite were investigated by means of SEM. Obtained results show that a proper amount of mixed Bi203-Nb205 addition could promote effectively not only densification, decrease in grain size, and improve uniformity of crystalline grains, but also Q-factor of specimen. With 0.5% （mass fraction） Bi203-Nb205 addition [ζ（Bi203：Nb205 = 7：3）] at 900 ℃, Q-factor could reach 110.5 with density as high as 5.15 g/cm^3 and initial permeability as high as 820.9.

关 键 词： 无机非金属材料 铁氧体 一 复合掺杂 品质因数 微观结构

领　　域： [电气工程] [一般工业技术]