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.
参考文献
| [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):1-3,8. |
| [2] | Pennander Lars-Olova,Jack alanb.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(03):19-25. |
| [3] | Lefebvre L P;Gélinas C;Mongeon P E .Consolidation of a lubricated ferromagnetic powder mix for AC soft magnetic applications[J].Advances in Powder Metallurgy and Particulate Materials,2002,14:86,97. |
| [4] | Gilbert I.;Bull S.;Evans T.;Jack A.;Stephenson D.;De Sa A. .Effects of processing upon the properties of soft magnetic composites for low loss applications[J].Journal of Materials Science,2004(2):457-461. |
| [5] | Toyoda T;Igarashi H;Hirose N .Development of super low iron-loss P/M soft magnetic material[J].SEI Technical Review,2005,60:3-8. |
| [6] | Claude Gélinas;Donald Brydges .Insulated iron powders for automotive applications[R].Canada:QMP Ltd,2002. |
| [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(01):39-47. |
| [8] | Gélinas C;Chagnon F;Pelletier S.Iron-resin composites for high frequency AC magnetic applications[A].,1997:37,45. |
| [9] | 邹联隆,易建宏,付应生,曾庆灵.纯铁磁粉芯的磁特性研究[J].磁性材料及器件,1999(01):58-61. |
| [10] | 郭有光,朱建国,V.S.Ramsden.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(自然科学版),2000(06):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(12):14-16. |
| [12] | Hongting Pu;Fengjing Jiang;Zhenglong Yang .Studies on preparation and chemical stability of reduced iron particles encapsulated with polysiloxane nano-films[J].Materials Letters,2006(1):94-97. |
| [13] | Doupovec J;Sitek J;Kakos J .Crystallization of iron phosphate glasses[J].Journal of Thermal Analysis,1981,22:213-219. |
| [14] | Chang K H;Lee T H;Hwa L G .Structure and elastic properties of iron phosphate glasses[J].Chinese Journal of Physics,2003,41(04):414-421. |
| [15] | Birks N;Meier G H.Introduction to high temperature oxidation of metal[M].London:Cambridge University Press,2006:84-86. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%