磁场位向对Fe-Si复合电沉积镀层硅含量及形貌的影响  

Effects of magnetic field direction on Fe-Sicomposite electrodeposition

作　　者：龙琼[1,2] 路坊海 胡素丽[1] 周登凤[1] 钟云波[2] LONG Qiong;LU Fang-hai;HU Su-li;ZHOU Deng-feng;ZHONG Yun-bo(College of Materials and Metallurgy Engineering, Guizhou Collaborative Innovation Center of Special Functional MaterialsGuiyang,Guizhou Instituteof Technology, Guiyang550003, China;Shanghai Key Laboratory of Modern Metallurgy and Materials Processing,Shanghai University, Shanghai 200072, China)

机构地区：[1]贵州理工学院材料与冶金工程学院,贵州省特种功能材料协同创新中心,贵州贵阳550003 [2]上海大学现代冶金与材料制备上海市重点实验室,上海200072

出　　处：《磁性材料及器件》2017年第2期6-11,34,共7页Journal of Magnetic Materials and Devices

基　　金：贵州省自然科学创新团队(黔科合[2015]4008)

摘　　要：利用Fe-30wt%Si和Fe-70wt%Si合金颗粒在稳恒磁场下采用复合电沉积法在低硅硅钢薄带上制备Fe-Si复合镀层。考察了搅拌强度、磁场强度以及磁场位向对Fe-Si复合镀层形貌及硅含量的影响规律。结果表明,施加磁场后获得的镀层硅含量显着增高,采用Fe-30wt%Si颗粒获得的镀层在不同位向0.1T磁场时均达到最大值,而采用Fe-70wt%Si颗粒在0~1T磁场强度下获得的镀层硅含量随着磁场强度的升高而升高。同时,采用Fe-30wt%Si颗粒获得的镀层表面在电流与磁场方向呈0~60°位向角、0.3T磁场下出现宏观针状突出物;采用Fe-70wt%Si颗粒在较大位向角磁场下获得的镀层表面形貌比较平整,而且颗粒分布比较均匀。这主要是由于磁性颗粒受到MHD效应与磁场力协同作用引起的。Fe-Si composite coatings were electrodeposited with Fe-30wt%Si or Fe-70wt%Si particles under magnetic fields.The effects of stirring speed,magnetic field flux(MFF)and azimuth direction on the morphology and the silicon content of coatings were investigated.The results show that the silicon content of coatings obtained in magnetic fields greatly increases compared to that without magnetic field.The silicon content of coatings for Fe-30wt%Si particles approximately reached maximum in0.1T,whereas for Fe-70wt%Si particles silicon content of coatings increases with increasing the MFF.At the same time,many needle-like protrusions appear on the coating surface for Fe-30wt%Si particles for the MFF of0.3T with an azimuth direction of0to60°.However,the coating surface obtained by Fe-70wt%Si particles was relatively smooth and the distribution of particles on coating surface was relatively uniform.This is mainly attributed to the interaction of MHD effect and magnetic field force.

关 键 词：磁场 复合电沉积 Fe-Si颗粒 MHD效应 

分 类 号：TM275[一般工业技术—材料科学与工程]