不同条件NiCuZn铁氧体纳米晶形成机理研究

The Research on the Forming Mechanism of NiCuZn Ferrite Nano-crystalline in Different Condition

采用共沉淀法制备了纳米晶(NiCuZn)Fe2O4铁氧体粉料。通过TG—DSC、XRD、TEM等测试手段表征了粉体粒子的形貌、粒径,分析了其微观结构和形貌。重点研究了各种工艺条件对产物收率、粒径、微粒形貌等物性的影响规律,探索了适宜的制备工艺条件。结果表明,共沉淀法制备的粉料颗粒细小均匀、形状完整;以硫酸亚铁、硝酸镍、硝酸铜和硝酸锌为起始原料,采用草酸盐共沉淀法可成功地制备纳米NiCuZn铁氧体;采用适宜的起始反应温度、搅拌速度、原料配比等反应条件,可制得较高产率且粒径分布较均匀NiCuZn铁氧体粉料。

NiCuZn Ferrite Nano-crystalline powder was prepared by co-precipitation method.Through the TG-DSC,XRD,TEM,and other means of testing to show that powder particle morphology and the particle size,and this paper also analyzes the micro-structure and morphology of powder particle.This paper is focusing on the impact rule of a variety conditions on the yield,size,shape and other physical properties of particles,to explore the preparation of appropriate conditions.The results show that the powder particles prepared by using co-precipitation method has the following features such as the uniform small particles,shape integrity and so on.The Nano NiCuZn ferrite can be prepared successfully by using oxalate co-precipitation method and taking Zn(NO3)2·6H2O、Ni(NO3)2·6H2O、Cu(NO3)2·3H2O、FeSO4·7H2O and(NH4)2C2O4·H2O as the initial materials.The NCuiZn ferrite powder with high yield and uniform particle size distribution can be prepared by adopting the relevant reaction conditions such as the appropriate initial reaction temperature,stirring speed,the ratio of raw materials and so on.