摘要
采用喷射-沉淀法成功地制备了纳米晶Ni-Zn铁氧体粉料。通过XRD、TG.DSC、SEM、TEM和BET等测试手段分析了其微观结构和形貌.结果表明:沉淀剂种类和溶液pH值对喷射.共沉淀法制备Ni-zn铁氧体纳米粉的物相和结构有着显著影响。采用NaOH溶液为沉淀剂,pH值范围为7.0~7.5,可以获得颗粒细小均匀、形状完整的纳米晶Ni-Zn铁氧体粉料。在600℃煅烧1.5h,样品晶粒尺寸为30nm左右,平均颗粒尺寸小于100nm。
Nanostructured Ni-Zn ferrite was successfully prepared by spraying-coprecipitation method. The microstructure was investigated by using XRD, TG-DSC, SEM, TEM as well as BET. The results show that reactive precipitator and pH value have significantly effect on the phase and microstructure of nanostructured Ni-Zn ferrite. Uniform and fine nano Ni-Zn ferrite powders are obtained by using NaOH precipitator and pH value of 7.0~7.5. The grain size is about 30 nm calcined at 600℃ for 1.5h, and average particle size is below 100nm.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2007年第A03期989-992,共4页
Journal of Functional Materials
关键词
纳米材料
NI-ZN铁氧体
喷射-沉淀法
物相
晶粒
nanostructured materials
Ni-Zn ferrite
spraying-coprecipitafion method
phase
grain size