Preparation process optimization of hard magnetic brake friction material based on NdFeB additive

Purpose This study aims to develop magnetic field-controlled friction braking technology, the preparation process of hard magnetic brake friction material was optimized and analyzed in this paper. Design/methodology/approach NdFeB, a rigid magnetic material, was selected as additive. Magnetic field...

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Bibliographic Details
Published in:Industrial lubrication and tribology 2022-03, Vol.74 (2), p.258-264
Main Authors: Zhao, Shaodi, Bao, Jiusheng, Zhang, Qingjin, Yin, Yan, Wang, Xiaoyang, Ai, Junwei
Format: Article
Language:English
Subjects:
Active control
Analytic hierarchy process
Brake linings
Braking
Composite materials
Electric potential
Excitation
Friction
Independent variables
Magnetic fields
Magnetic materials
Magnetic properties
Mathematical models
Mechanical properties
Optimization
Orientation
Polyethylene
Process parameters
Stainless steel
Temperature
Tribology
Voltage
Wear resistance
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Summary:Purpose This study aims to develop magnetic field-controlled friction braking technology, the preparation process of hard magnetic brake friction material was optimized and analyzed in this paper. Design/methodology/approach NdFeB, a rigid magnetic material, was selected as additive. Magnetic field orientation, a part of material preparation, was added to the preparation process. Experiments investigated the tribological properties of each brake lining sample. The preparation process of the hard magnetic friction material was optimized based on fuzzy theory by using analytic hierarchy process (AHP) methods and SPSS software. The microscopic morphology and the distribution and content of elements of friction lining samples prepared with or without orientation excitation voltage were analyzed by scanning electron microscope and energy dispersive X-ray microanalysis. Findings The results showed that the tribological properties of brake lining samples could be improved by process optimization and the oriented excitation voltage can effectively improve the properties of the brake lining. Originality/value The magnetic field orientation was added into the traditional preparation process, and a set of process parameters with the best tribological properties were obtained through optimization. It is believed that this research will be of great theoretical and practical significance to develop both new brake materials and active control technology of the braking process in the future.
ISSN:0036-8792
1758-5775
DOI:10.1108/ILT-07-2021-0243