| 铁硅铝磁粉芯的绝缘包覆研究 |
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| 引用本文： | 林 坤,熊亚东,严 密,张念伟,徐 伟,郭 婷,姜银珠.铁硅铝磁粉芯的绝缘包覆研究[J].稀有金属材料与工程,2014,43(5):1262-1265. |
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| 作者姓名： | 林 坤 熊亚东 严 密 张念伟 徐 伟 郭 婷 姜银珠 |
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| 作者单位： | 浙江大学，浙江 杭州 310027 |
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| 基金项目： | 国家自然科学基金 (51102213) |
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| 摘 要： | 研究了钝化工艺及不同无机粘结剂对铁硅铝磁粉芯性能的影响。铁硅铝粉末用0.4%(质量分数,下同)的磷酸液钝化,用0.9%的玻璃粉粘结,在1980 MPa下压制成环形样品,700℃氮气气氛保护下退火热处理1 h所制备的铁硅铝磁粉芯综合性能最佳。其有效磁导率可达125.98,50 kHz/100 mT下的体积损耗为316.7 mW/cm3。综合磁性能和有机粘结剂制备的铁硅铝磁粉芯相当,但可以大大提高样品的径向抗拉强度,达到261 N,无需固化处理。同时提高了磁粉芯在使用过程中的抗老化能力。
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| 关 键 词： | 磁粉芯 有效磁导率 无机粘结剂 损耗 抗拉强度 |
| 收稿时间： | 2013/5/17 0:00:00 |
Investigation of Coating Process of Fe-Si-Al Powder Core |
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| Lin Kun,Xiong Yadong,Yan Mi,Zhang Nianwei,Xu Wei,Guo Ting and Jiang Yinzhu.Investigation of Coating Process of Fe-Si-Al Powder Core[J].Rare Metal Materials and Engineering,2014,43(5):1262-1265. |
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| Authors: | Lin Kun Xiong Yadong Yan Mi Zhang Nianwei Xu Wei Guo Ting and Jiang Yinzhu |
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| Affiliation: | Zhejiang University, Hangzhou 310027, China |
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| Abstract: | The effect of phosphate passivation and different inorganic adhesives on properties of Fe-Si-Al powder core was investigated. When the Fe-Si-Al magnetic powder core is made from the powder passivated in 0.4 wt% phosphoric acid solution, coated with 0.9 wt% of low melting point glass powder, compacted under 1980 MPa and annealed at 700 oC for 1 h in N2 atmosphere, it presents the optimum magnetic properties. Its effective permeability is 125.98, the total core loss is 316.7 mW/cm3 (f=50 kHz, Bm=100 mT). Besides, tensile strength of the core is 261 N. Meanwhile, it improves the anti-aging ability of Fe-Si-Al powder core during using |
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| Keywords: | powder cores effective permeability inorganic adhesive core loss tensile strength |
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