亲疏水性SiO_2复合有机树脂包覆对FeSiCr磁粉芯性能的影响
Effects of hydrophilic and hydrophobic SiO_2 composite organic resin coating on properties of FeSiCr magnetic powder cores
查看参考文献35篇
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文摘
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研究了亲疏水性SiO_2复合有机树脂对FeSiCr磁粉芯性能的影响以及退火热处理对磁粉芯磁性能的影响。将FeSiCr合金粉末经磷化处理后,分别采用疏水性、亲水性两种不同类型的SiO_2复合有机树脂对粉体进行绝缘包覆,经压制成型并固化制备成FeSiCr磁粉芯。结果表明,采用偶联改性亲水性SiO_2复合有机树脂的包覆效果明显优于疏水性SiO_2复合有机树脂包覆。随着SiO_2添加量的增加,磁粉芯的体电阻率和矫顽力增加,而密度、饱和磁化强度及磁导率降低;采用质量分数0.5%疏水性SiO_2复合有机树脂包覆工艺制备的FeSiCr磁粉芯退火后综合性能最优,在20 mT,100 kHz测试条件下,磁损耗仅为49.84 kW/m~3,相比于采用纯树脂包覆工艺制备的磁粉芯损耗下降了16.9%。退火热处理能够有效提高FeSiCr磁粉芯的磁性能。 |
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其他语种文摘
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The effects of hydrophilic and hydrophobic SiO_2 composite organic resin on the properties of FeSiCr magnetic powder cores and the effects of annealing treatment on magnetic properties were studied.After phosphating,the FeSiCr alloy powders were coated by two types of SiO_2 composite resin,which are hydrophobic and hydrophilic,respectively.The FeSiCr magnetic powder cores were prepared by compaction and curing.The results show that the coating effect of coupling modified hydrophilic SiO_2 composite organic resin is better than that of hydrophobic SiO_2 composite organic resin.With the increase of SiO_2 addition,the specific resistance and coercivity of the magnetic powder cores are increased,while the density,saturation magnetization and effective permeability are decreased.The FeSiCr magnetic powder cores coated with 0.5%hydrophobic SiO_2 composite organic resin have excellent comprehensive performance after annealing.Under the condition of 20 mT,100 kHz,the magnetic core loss is 49.84 kW/m~3,which is 16.9%lower than that of the magnetic powder cores coated with pure resin.Annealing can effectively promote magnetic properties of FeSiCr magnetic powder cores. |
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来源
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材料工程
,2022,50(2):135-143 【核心库】
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DOI
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10.11868/j.issn.1001-4381.2021.000053
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关键词
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FeSiCr磁粉芯
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SiO_2包覆
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亲水性
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疏水性
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磁损耗
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地址
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华南理工大学材料科学与工程学院, 广州, 510640
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1001-4381 |
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学科
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冶金工业;电工技术 |
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基金
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广东省自然科学基金面上项目
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文献收藏号
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CSCD:7201682
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