溶胶-化学共沉淀法制备片状Zn_xCo_(2-x)-W型铁氧体  

Study on Preparation and Properties of Zn_xCo_(2-x)-W Ferrites by Sol-chemical Coprecipitation Method

作　　者：沈星宇 刘佳兴 邢立建 杨会芳 王艺斯 孟锦宏[1] SHEN Xingyu;LIU Jiaxing;XING Lijian;YANG Huifang;WANG Yisi;MENG Jinhong(Shenyang Ligong University,Shenyang 110159,China)

机构地区：[1]沈阳理工大学环境与化学工程学院,沈阳110159

出　　处：《沈阳理工大学学报》2018年第3期68-74,共7页Journal of Shenyang Ligong University

基　　金：国家自然科学基金资助项目(51172148);北京化工大学化工资源有效利用国家重点实验室开放课题(CRE-2016-104);辽宁省大学生创新创业训练计划项目(201610144038)

摘　　要：采用溶胶-化学共沉淀法及掺杂元素制备得到近六角形、微米级、片状Zn_xCo_(2-x)-W型铁氧体(Ba Zn_xCo_(2-x)Fe16O27)。研究了所制备铁氧体的物相组成、颗粒形貌、静磁性能。通过单因素方差分析判断了实验因素(x值、Ba/Ba Zn_xCo_(2-x)Fe16O27原料质量比及焙烧温度)对所制备铁氧体饱和磁化强度Ms和矫顽力Hc的影响显著性。结果表明,x值、Ba/Ba Zn_xCo_(2-x)Fe16O27原料质量比及焙烧温度均对Znx-Co2-x-W型铁氧体的Ms和Hc存在显著影响;二次合成及掺杂元素的方法使颗粒径向尺寸达0.7~4μm,径厚比达7~10;片状颗粒径向尺寸、径厚比及产物纯度明显提高,溶胶-化学共沉淀法制备的Ba Zn_xCo_(2-x)Fe16O27的Ms较溶胶凝胶法制备的Ba Zn_xCo_(2-x)Fe16O27的Ms明显提高。Near-hexagonal,micron-scale,platelet-like Znx-Co2-x-W ferrites（ Ba Zn_xCo_（2-x） Fe16 O27） were prepared by sol-chemical coprecipitation and doping elements. The phase composition,particle morphology,and magnetostatic properties of the prepared ferrite were studied. The effect of experimental factors（ x value material mass ratio of Ba/Ba Zn_xCo_（2-x）Fe16 O27 and calcination temperature） on the saturation magnetization Msand coercive force Hcof the prepared ferrite was judged by one-way analysis of variance. The results showthat x value,material mass ratio of Ba/Ba Zn_xCo_（2-x）Fe16 O27,and calcination temperature all have significant effects on the Msand Hcof Znx-Co2-x-W ferrites; secondary synthesis and doping methods make the radial size of the particles up to 0. 7 ~ 4μm,diameter-to-thickness ratio7 ~ 10; The radial size,the diameter thickness ratio and the purity of the product are obviously improved,and the sol-chemical properties of the particles are improved. The Msof BaZn_xCo_（2-x）Fe16 O27 prepared by sol-chemical coprecipitation method is significantly higher than that of Ba Zn_xCo_（2-x）Fe16 O27 prepared by sol-gel process.

关 键 词：溶胶-化学沉淀法 W型铁氧体 片状 掺杂 

分 类 号：TB43[一般工业技术]