采用高能球磨的方法处理水雾化Fe-Si-Al软磁合金粉末,运用SEM、XRD分析球磨粉末的显微结构和晶体结构,测试粉末的静磁参数及其2～18GHz范围的复磁导率(μr=μ′-jμ″).结果表明,球磨时间增加,粉末的扁平率增大、粒度减小;平均晶粒尺寸减小、内应变增大导致结晶有序度降低;粉末的饱和磁感应强度减小、矫顽力增大;球磨粉末的复磁导率实部和自然共振频率均相应提高,但过度球磨不利于材料磁损耗性能的提高.
参考文献
| [1] | Wu L Z;Ding J;Jiang H B et al.[J].Journal of Magnetism and Magnetic Materials,2005,285:233-239. |
| [2] | Yanagimoto K;Majima K;Sunada S et al.[J].Journal of the Japan Society of Powder and Powder Metallurgy,2004,51(04):293-296. |
| [3] | Kim S S;Kim S T;Yoon Y C et al.[J].Journal of Applied Physics,2005,97(10F905):1-3. |
| [4] | Ono H.;Yoshida S.;Ando S.;Shimada Y. .Improvement of the electromagnetic-noise suppressing features for Fe-Si-Al composite sheets by dc magnetic field biasing[J].Journal of Applied Physics,2003(10 Pt.2):6662-6664. |
| [5] | Yoshida S;Sato M;Sugawara E et al.[J].Journal of Applied Physics,1999,85(08):4636-4638. |
| [6] | Kim Y D;Chung J Y;Kim J et al.[J].Materials Science and Engineering A,2000,291:17-21. |
| [7] | Cho HS;Kim AS;Kim SM;Namgung J;Kim MC;Lee GA .Study of electromagnetic wave-absorbing materials made by a melt-dragging process[J].Physica Status Solidi, A. Applied Research,2004(8):1942-1945. |
| [8] | Matsumoto M.;Miyata Y. .Thin electromagnetic wave absorber for quasi-microwave band containing aligned thin magnetic metal particles[J].IEEE Transactions on Magnetics,1997(6):4459-4464. |
| [9] | Olmedo L;Chateau G;Deleuze C et al.[J].Journal of Applied Physics,1993,73(10):6992-6994. |
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