摘要
通过减小原材料粒度和在主配方中添加适量CuO,显著降低了NiZn铁氧体样品的烧结温度,在930℃低烧结温度条件下制备的NiZn铁氧体样品的晶粒更完整,组织更致密,使得材料的初始磁导率>1500。与传统工艺条件下制备的磁导率相当的NiZn铁氧体相比,本文中使用较低的NiO含量、预烧温度和烧结温度,制备的NiZn铁氧体具有更好的性能和较低的生产成本。
The NiZn ferrites with initial permeability over 1500 were sintered at 930℃ through the increase of CuO content and the decrease of granularity of raw materials particles. The permeability of NiZn ferrite sintered at 930℃ was the same as that prepared by conventional method. Moreover, the NiZn ferrite sintered at 930℃ has higher density, lower loss and better temperature characteristic. SEM analysis shows that the grains of the NiZn ferrite sintered at 930℃ was more perfect and the microstructure more compact. The production cost of NiZn ferrite sintered at 930℃ was more lower because of the lower NiO content and lower calcining and sintering temperature.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2005年第6期853-855,共3页
Journal of Functional Materials
基金
国家自然科学基金资助项目(50471041)