曾国勋,张海燕,葛鹰,陈易明.FeCoNi合金超细粉体的制备及其微波性能研究[J].表面技术,2010,39(3):1-5,18.
ZENG Guo-xun,ZHANG Hai-yan,GE Ying,CHEN Yi-ming.Fabrication and Absorption of FeCoNi Alloy Fine Powders[J].Surface Technology,2010,39(3):1-5,18 |
| FeCoNi合金超细粉体的制备及其微波性能研究 |
| Fabrication and Absorption of FeCoNi Alloy Fine Powders |
| 投稿时间：2010-01-29 修订日期：2010-06-10 |
| DOI： |
| 中文关键词: 铁磁合金 超细粉 电磁参数 反射率 |
| 英文关键词:ferromagnetic alloy fine powders electricmagnetic parameter reflection |
| 基金项目:国家自然科学基金对外交流与合作项目(2006国科金工外资助字第50610105054);高等学校博士学科点专项科研基金(20050562002);广东省自然科学基金(036918);粤港关键领域重点突破招标项目(20061683);毫米波国家重点实验室开放课题(K200921) |
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| Author | Institution |
| ZENG Guo-xun | 1.Guangdong University of Technology, Guangzhou 510006, China;2.State Key Laboratory of Millimeter Waves, Nanjing 210096, China |
| ZHANG Hai-yan | 1.Guangdong University of Technology, Guangzhou 510006, China;2.State Key Laboratory of Millimeter Waves, Nanjing 210096, China |
| GE Ying | Guangdong University of Technology, Guangzhou 510006, China |
| CHEN Yi-ming | Guangdong University of Technology, Guangzhou 510006, China |
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| 中文摘要: |
| 采用硝酸盐柠檬酸溶胶凝胶法结合氢还原法制备FeCoNi合金超细粉体。用扫描电镜观察粉体的形貌,用激光粒度分析仪测试粉体的粒度,结果显示:合金粉体呈现片状和针状,粒度分布很宽。将制备的合金粉与石蜡按质量比80∶20混合制成样品,在0.5～ 8 GHz内,采用矢量网络分析仪测试样品的电磁参数。研究结果显示:合金粉体μ′≥ 2的频率至少高于3 GHz,有的达到6 GHz;样品的磁导率虚部曲线呈现多模共振的形式。材料反射率计算显示,合金粉的5 dB吸波频宽可达5.91 GHz(2.09～ 8 GHz)。 |
| 英文摘要: |
| Fine powders of FeCoNi with different nominal Co, Ni content were prepared by citric nitrate sol-gel method and thermal treatment in hydrogen atmosphere.The morphology and particle sizes of samples were characterized by SEM and laser particle size analyzer. The results show that FeCoNi powders have a needle-like(or flake-like)shape with a wide particle size disturbution.And the obtained powders were randomly dispersed in paraffin at a mass ratio of 80 ∶20 for microwave electromagnetic parameters test in the frequency range of 0.5～ 8 GHz. The frequencies of samples whoseμ′≥ 2 are at least 3 GHz,for certain samples even as high as 6 GHz. The imaginary parts of complex permeability of the samples exhibit several slightly damped ferromagnetic resonances. The calculation reflection losses of paraffin composites with alloy powders achieve a microwave absorption of 5 dB with a band width of 5.91 GHz(2.09～ 8 GHz) |
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