纳米铁颗粒磁流变液的制备及性能
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摘要
以直流电弧等离子体法制备的纳米铁颗粒为分散相制备磁流变液。实验表明所制备的颗粒为尺寸分布较为均一的球状颗粒,直径为30nm～50nm,且具有较高的饱和磁化强度。分别以纳米铁颗粒和羰基铁粉为分散相,二甲基硅油为基液制备颗粒含量相同的磁流变液。磁流变性能及沉降稳定性实验结果表明,纳米铁颗粒磁流变液具有显著的磁流变效应,且沉降稳定性优于羰基铁粉磁流变液。
Nano-iron particles which were used as the solid phase for magnetorheological fluids(MRF)in this work were prepared by DC electric arc discharge.The experimental results show that the prepared particles are spherical particles of uniform particle size(30nm～50nm in diameter)and they have high saturation magnetization.The magnetorheological fluids which dispersed nano-iron particles and carbonyl iron powder in silicone oil respectively were prepared.The mechanical properties and the sedimentation stability tests results show that the nano-iron particlesbased magnetorheological fluids have a pronounced magnetorheological effect,and the sedimentation stability is better than that of carbonyl iron powder based one.
Nano-iron particles which were used as the solid phase for magnetorheological fluids(MRF)in this work were prepared by DC electric arc discharge.The experimental results show that the prepared particles are spherical particles of uniform particle size(30nm～50nm in diameter)and they have high saturation magnetization.The magnetorheological fluids which dispersed nano-iron particles and carbonyl iron powder in silicone oil respectively were prepared.The mechanical properties and the sedimentation stability tests results show that the nano-iron particlesbased magnetorheological fluids have a pronounced magnetorheological effect,and the sedimentation stability is better than that of carbonyl iron powder based one.
引文
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[13] Wu J,Pei L,Xuan S,et al.Particle size dependent rheological property in magnetic fluid[J].Journal of Magnetism&Magnetic Materials,2016,408:18-25.
[2]张智.载人运载火箭技术回顾与展望[J].宇航总体技术,2018,2(2):56-61.
[3]许阳光,龚兴龙,万强,等.磁敏智能软材料及磁流变机理[J].力学进展,2015,45:461-495.
[4] Experimental and numerical studies of squeeze mode behaviour of magnetic fluid[J].Proceedings of the Institution of Mechanical Engineers,Part C:Journal of Mechanical Engineering Science,2008,222(12):2395-2407.
[5] Dong X,Tong Y,Ma N,et al.Properties of cobalt nanofiber-based magnetorheological fluids[J].RSC Advances,2015,5(18):13958-13963.
[6] Kavlicoglu B,Gordaninejad F,Evrensel C,et al.A semi-active,high-torque, magnetorheological fluid limited slip differential clutch[J].Journal of Vibration and Acoustics,2006,128(5):604-610.
[7]姚军,张进秋,彭志召,等.羰基铁粉的铁含量和粒径对磁流变液剪切屈服强度的影响[J].材料研究学报,2014,28(12):955-960.
[8] De Vicente J,Klingenberg D J,Hidalgoalvarez R.Magnetorheological fluids:a review[J].Soft Matter,2011,7(8):3701-3710.
[9]唐欣,凌虹,胡克鳌.磁流变液沉降稳定性研究现状与趋势[J].磁性材料及器件,2004,35(3):5-8.
[10]赵明媚,张进秋,姚军,等.磁流变液沉降稳定性影响因素分析[J].金属功能材料,2017,24(3):29-32.
[11] Gan X,Xue F,Huang H,et al.Preparation and characterization of SiC/C nano-composites[J].Journal of Materials Engineering,2014,4(2):75-80.
[12] Tong Y,Dong X,Qi M.High performance magnetorheological fluids with flower-like cobalt particles[J].Smart Materials and Structures,2017,26(2):025023.
[13] Wu J,Pei L,Xuan S,et al.Particle size dependent rheological property in magnetic fluid[J].Journal of Magnetism&Magnetic Materials,2016,408:18-25.