铁粉基软磁复合材料绝缘包覆层的研究

刘菲菲; BAKER A.P.; 翁履谦; 宋申华

doi:10.19515/j.cnki.1003-1545.2007.05.004

铁粉基软磁复合材料绝缘包覆层的研究

doi: 10.19515/j.cnki.1003-1545.2007.05.004

哈尔滨工业大学深圳研究生院材料科学与工程学科部,广东深圳 518055

详细信息

中图分类号: TG146.1
计量
- 文章访问数: 54
- HTML全文浏览量: 6
- PDF下载量: 5
- 被引次数: 0
出版历程
- 收稿日期: 2007-05-15
- 网络出版日期: 2024-06-17

Study of Phosphate Coatings for Fe Based Soft Magnetic Composites

Department of Material Science and Engineering,Shenzhen Graduate School,Harbin Institute of Technology,Shenzhen 518055,China

摘要

摘要: 利用化学处理法在铁磁粉表面直接生成无机磷酸盐包覆层,并采用粉末冶金法进行压制烧结得到铁粉基软磁复合材料(SMCs)。利用扫描电子显微镜和X射线衍射对SMC材料包覆层的显微形貌和组成进行了分析,并利用差热热重分析法探讨了包裹层的高温变化。结果表明,化学处理法能够实现铁粉表面的磷酸盐包覆,且在600℃左右非晶态磷酸铁会发生晶化作用,从而可能转变成可导体使包裹层的绝缘性被破坏,而非其高温热分解造成,这还需要进一步的电阻测量试验来证实。
- 软磁复合材料 /
- 粉末冶金 /
- 磷酸盐包覆 /
- 高温稳定
Abstract: Inorganic phosphate coating was prepared on the surface of iron powders by chemical method.Powder metallurgy process was employed to obtain the soft magnetic composite(SMC)components by compacting and heat treating the powders.The particles were characterized by means of scanning electron microscopy(SEM),X-ray diffraction(XRD)and thermogravimetry-differential thermal analysis(TG-DTA).The results suggest that thermall stable phosphate coated iron powder can be prepared with chemical method.Resistive insulation of the coat may break down due to the crystallization of the amorphous phosphate coating at above 600℃ which needs to be proved through further resistivity tests.
- SMCs /
- Powder metallurgy /
- Phosphate coating /
- Thermal stability

HTML全文

参考文献(15)

[1]	黄允凯,朱建国,胡虔生.软磁复合材料在电机中的应用[J].微特电机,2006,11.
[2]	Lars-Olvo P,Alan J.铁粉软磁复合材料开发及其在电机上的应用[J].金属功能材料,2002,9(3):19-25.
[3]	Lefebvre L P,G啨linas C,Mongeon P E.Consolidation ofa lubricated ferromagnetic powder mix for AC soft mag-netic applications[J].Advances in Powder Metallurgy&Particulate Materials,2002,14:86,97.
[4]	Gilbert I,Bull S,Evans T,et al.Effects of processingupon the properties of soft magnetic composites for lowloss applications[J].Material Science,2004,39(2):457-461.
[5]	Toyoda T,Igarashi H,Hirose N.Development of superlowiron-loss P/Msoft magnetic material[J].SEI Tech-nical Review,2005,60:3-8.
[6]	Claude G啨linas,Donald Brydges.Insulated iron powdersfor automotive applications[R].Canada:QMP Ltd,2002.2-5.
[7]	Chio Ishihara,Aya Ishii,Kazuo Asaka.Effects of resin,insulation treatment,and iron powder on the magnetic,electrical,and mechanical properties of powder cores[J].Hitachi Powdered Metals Technical Report,2002(1):39-47.
[8]	G啨linas C,Chagnon F,Pelletier S.Iron-resin compositesfor high frequency AC magnetic applications[J].Ad-vances in Powder Metallurgy&Particulate Materials,1997(1):37,45.
[9]	邹联隆,易建宏,等.纯铁磁粉芯的磁特性研究[J].磁性材料及器件,1999,30(1):58-61.
[10]	郭有光,朱建国.SMC爪极永磁同步电动机的参数与性能计算[J].华中理工大学学报,2000,28(6):15-17.
[11]	孙宏亮,王群.特高频高磁损耗材料的制备及其磁特性研究[J].电子元件与材料,2005,24(12):214-216.
[12]	Pu H,Jiang F,Yang Z.Studies on preparation and chem-ical stability of reduced iron particles encapsulated withpolysiloxane nano-films[J].Mater Lett,2006,60(1):94-97.
[13]	Doupovec J,SitekJ,Kakos J.Crystallization of iron phos-phate glasses[J].Journal of Thermal Analysis,1981,22:213-219.
[14]	Chang K H,Lee T H,Hwa L G.Structure and elasticproperties of iron phosphate glasses[J].Chinese Journalof Physics,2003,41(4):414-421.
[15]	Birks N,Meier G H.Introductionto hightemperature ox-idation of metal[M].London:Cambridge UniversityPress,2006.84-86.