钡铁氧体包覆空心玻璃微珠的制备与磁性能研究  

Preparation and magnetic property of BaFe_(12)O_(19) coated hollow glass microspheres

作　　者：何征[1] 齐暑华[1] 王劲[1] 邱华[1] 钟晓兰[1] 

机构地区：[1]西北工业大学理学院应用化学系,西安710129

出　　处：《化工新型材料》2015年第5期144-146,共3页New Chemical Materials

基　　金：西北工业大学研究生创业种子基金资助(Z2014071)

摘　　要：以硝酸钡、硝酸铁和柠檬酸为原料,使用溶胶-凝胶自蔓延法,在空心玻璃微珠(HGM)表面均匀包覆上钡铁氧体(BaFe12O19)涂层。采用扫描电子显微镜(SEM)、能谱分析(EDS)、X射线衍射仪(XRD)和振动样品磁强计(VSM)对BaFe12O19/HGM复合颗粒进行表面观察、组分测定和磁性能表征。结果表明:经过表面处理的空心玻璃微珠表面光滑,BaFe12O19涂层均匀连续,镀层厚度小于1μm;BaFe12O19/HGM复合颗粒具有良好的磁性能,饱和磁化强度(Ms)为27.07emu/g,剩磁强度(Mr)为15.82emu/g,矫顽力(H)为4706.89Oe。With barium nitrate,ferric nitrate and citric acid as raw materials,by using sol-gel self-propagating meth- od, barium ferrite （BaFelz O19 ） was coated on the surface of hollow glass microspheres （HGM） uniformly. The morphology and performance of BaFelz O19/HGM composite particles were characterized by canning electron microscopy （SEM）, energy spectrum analysis （EDS）,X-ray diffraction （XRD） and vibrating sample magnetometer （VSM）. The results showed that BaFe12 O19 coated on the surface of hollow glass microspheres was continuous and uniform , the coating thickness was less than l ktm,and the particles had good magnetic properties, the saturation magnetization （Ms） was 27.07 emu/g, remanent magnetization （Mr） was 15.82 emu/g,and coercive force （H） was 4706.89 Oe.

关 键 词：钡铁氧体 空心玻璃微珠 溶胶-凝胶 磁性能 

分 类 号：TM277[一般工业技术—材料科学与工程]