FINEMET软磁复合材料温压成型制备及其软磁性能调控研究  

Research on Warm Pressing Preparation and Soft Magnetic Properties Control of FINEMET Soft Magnetic Composites

作　　者：孙海波 黄皓辉 张锐 王敬慧 王策 SUN Haibo;HUANG Haohui;ZHANG Rui;WANG Jinghui;WANG Ce(School of Materials Science and Hydrogen Energy,Foshan University,Foshan 528000,China;Institute of Intelligent Manufacturing,Foshan Polytechnic,Foshan 528137,China;Product R&D Center,Foshan Zhongyan Magnetoelectric Technology Co.,Ltd.,Foshan 528241,China)

机构地区：[1]佛山大学材料科学与氢能学院,广东佛山528000 [2]佛山职业技术学院智能制造学院,广东佛山528137 [3]佛山中研磁电科技股份有限公司产品研发中心,广东佛山528241

出　　处：《热加工工艺》2024年第24期39-47,共9页Hot Working Technology

基　　金：粤佛区域联合基金地区培育项目(2022A1515140010);广东省自然科学基金面上项目(2021A1515011796);广东省普通高校重点领域专项项目(2023ZDZX3032);广东省特色创新项目(2023KTSCX337)。

摘　　要：系统研究了温压工艺下成型温度(T_(c))、压强(P_(m))、润滑剂(C_(l))及粘结剂(C_(b))含量等参数对FINEMET软磁复合材料(FINEMET-SMCs)成型密度(ρ_(c))及其软磁性能的影响规律。结果表明,合适的温压工艺可有效提升SMCs在成形过程中磁粉表面润滑效果。利于相应SMCs内非磁孔隙率及磁畴壁位移阻力的降低,最终有助于其软磁性能的改善。FINEMET-SMCs的磁滞损耗P_(h)在其总损耗P_(cv)变化中占主导作用,其中P_(h)/P_(cv)>76%。与T_(c)=25℃工况相比,在T_(c)=110℃、P_(m)=1200 MPa、C_(l)=1.5wt%及C_(b)=5.0wt%的优化温压工艺下,FINEMET-SMCs的ρ_(c)提高了7.7%,至5.44 kg/m^(3),并表现出优异的综合软磁性能。The effects of forming temperature(T_(c))and pressure(P_(m)),contents of lubricant(C_(l))and binder(C_(b))on the compacting density(ρ_(c))and soft magnetic properties of FINEMET soft magnetic composites(FINEMET-SMCs)were systematically studied.The results show that a suitable warm pressing process can effectively improve the surface lubrication effect of magnetic powders in SMCs forming process,which is conducive to the reductions of non-magnetic porosity and the displacement resistance of magnetic domain wall in the corresponding SMCs,and finally contributes to the improvement of its soft magnetic properties.The hysteresis loss P_(h) plays a dominant role in the variation of total losses P_(cv) for the FINEMET-SMCs,wherein of P_(h)/P_(cv)>76%.Compared with the T_(c)=25℃working condition,under the optimized warm pressing process parameters of T_(c)=110℃,P_(m)=1200 MPa,C_(l)=1.5wt%and C_(b)=5.0wt%,theρ_(c) of the FINEMET-SMCs increases by 7.7%to 5.44 kg/m^(3),and the SMCs exhibit excellent comprehensive soft magnetic properties.

关 键 词：软磁复合材料 温压成型 成型密度 软磁性能 

分 类 号：TG156.1[金属学及工艺—热处理] TG132.27[金属学及工艺—金属学]