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Applied Research of Magnetic Fluid in the Specific Gravity Test of Objects

Author: MengHongFang
Tutor: YangQingXin
School: Hebei University of Technology
Course: Theory and New
Keywords: Magnetic fluid Apparent density External magnetic field The proportion of test
CLC: TM271
Type: Master's thesis
Year: 2006
Downloads: 65
Quote: 4
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Abstract


The magnetic liquid is a novel functional material , it is a stable colloidal suspension containing the ferromagnetic particles uniformly distributed , with both the magnetic characteristics of the solid magnetic material , and having the flow of the liquid . Since NASA found that this material , magnetic liquid has a huge role to play in many fields such as electrical, mechanical , medical , physical , chemical . Magnetic fluid under the action of the external magnetic field , having a suspension force of the magnetic induction . Cause changes in the density of the magnetic fluid , as by changing the strength of the applied magnetic field , causing a different proportion of objects drifting , screening and separation of objects , objects proportion . This paper studies the principle of magnetic liquid objects specific gravity test technology and its application . External gradient magnetic field of the magnetic fluid , and is designed from the theoretically calculated and analyzed the results of the proportion of the magnetic liquid objects testing techniques ; designed test an experimental apparatus of the proportion of the magnetic liquid objects , including the power supply , the coil , the magnetic field ; the magnetic density of the liquid , the basic physical properties of the measurement of the tension, viscosity , magnetization experiments and analyzed the experimental results ; carried out the measurement of the object of the different specific gravities of the magnetic liquid test experiment and analysis of the experimental results finally obtained the excitation of the magnetic liquid (excitation current ) proportion curve measured object . The experiments show that better laid a good foundation for further applications .

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CLC: > Industrial Technology > Electrotechnical > Electrical materials > Magnetic materials,ferrite > Magnetic materials, ferromagnetic materials
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