基于旋转磁场作用的磁流变脂磁致电阻特性研究

doi:10.11896/cldb.22120138

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Abstract Magnetorheological grease is a new magneto-sensitive material with fast magnetic response and weak fluidity, which has potential application value in sensing and damping and vibration reduction. Magnetorheological grease was prepared by using carbonyl iron powder as soft magnetic filling particles and lipid matrix. A resistance test unit and a rotating magnetic field test system were established. The influence of the deflection angle and rotation velocity of the rotating magnetic field on the magnetoresistive properties of magnetorheological grease was studied and the mechanism of the influence on the magnetoresistiveproperties was analyzed at the microscopic level. The results show that the relative variation of magnetoresistance can be effectively improved by increasing the content of soft magnetic filling particles. In the single-period magnetic field deflection angle test, the variation of the resistance of magnetorheological grease resistance test unit formed a symmetrical rising and falling section, and the absolute variation of the resistance value within the range of deflection period was 2.4 MΩ. The resistance value of the test unit showed a periodic variation trend matching the rotating speed at different deflection speeds.

Key words： magnetorheological grease rotating magnetic field carbonyl iron powder magnetoresistance

Published: 25 July 2024 Online: 2024-08-12

CLC number:

O482.54

Fund:General Program of Chongqing Natural Science Foundation (cstc2019jcyj-msxmX0005,cstc2020jcyj-msxmX0425),National Natural Science Foundation of China (51905062, 61901068), China Postdoctoral Science Foundation (2021MD703913).

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	JU Benxiang
	FU Benyuan
	LYU Bing

Cite this article:

JU Benxiang,FU Benyuan,LYU Bing. Study on Magnetoresistance Properties of Magnetorheological Grease Based on Rotating Magnetic Field[J]. Materials Reports, 2024, 38(14): 22120138-5.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.22120138 OR http://www.mater-rep.com/EN/Y2024/V38/I14/22120138

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