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

孙海波 ¹黄皓辉 ¹张锐 ¹王敬慧 ²王策³

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作者信息

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
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摘要

系统研究了温压工艺下成型温度(Tc)、压强(Pm)、润滑剂(C1)及粘结剂(Cb)含量等参数对FINEMET软磁复合材料(FINEMET-SMCs)成型密度(ρc)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Ph在其总损耗Pev变化中占主导作用,其中Ph/Pcv＞76％.与Tc=25 ℃工况相比,在Tc=110℃、Pm=1200 MPa、C1=1.5wt％及 Cb=5.0wt％的优化温压工艺下,FINEMET-SMCs 的ρc提高了7.7％,至 5.44 kg/m3,并表现出优异的综合软磁性能.

Abstract

The effects of forming temperature(Tc)and pressure(Pm),contents of lubricant(C1)and binder(Cb)on the compacting density(ρc)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 lossPhplays a dominant role in the variation of total losses Pcv for the FINEMET-SMCs,wherein of Ph/Pcv＞76％.Compared with the Tc=25℃ working condition,under the optimized warm pressing process parameters of Tc=110℃,Pm=1200 MPa,C1=1.5wt％and Cb=5.0wt％,the ρc of the FINEMET-SMCs increases by 7.7％to 5.44 kg/m3,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

Key words

soft magnetic composites/warm pressing/compaction density/soft magnetic properties

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出版年

2024

热加工工艺

中国船舶重工集团公司热加工工艺研究所中国造船工程学会船舶材料学术委员会

热加工工艺

CSTPCD北大核心

影响因子：0.55

ISSN：1001-3814

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