磁化状态对粘结NdFeB磁体磁稳定性影响分析

doi:10.13228/j.boyuan.issn1006-6543.20190093

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Abstract For bonded NdFeB magnets，the magnetization status not only directly determines the magnitude of the magnetic field provided by the magnet，but also has an important impact on the magnetic stability and material consumption of the magnet. Based on the analysis of flux density variation after saturated magnetization for a certain time，it is found that the magnet with reverse demagnetization after saturated magnetization has better magnetic stability. The larger the range of the reverse demagnetization is，the smaller the loss rate of flux density in air gap caused by external demagnetization field is，and the better the stability of magnetic performance is. And the result of the experiment shows that when the range of the reverse demagnetization is greater than 9%，the magnet has relatively good magnetic stability；and it is verified that the more the material is used，the better the magnetic stability of the magnet is.

Key words： magnetization status magnetic stability reverse demagnetization

Received: 06 May 2019

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	Articles by authors
	GUO Zhi-wei
	XU Hai
	XIAO Kai-ye
	ZHENGWen

Cite this article:

GUO Zhi-wei,XU Hai,XIAO Kai-ye, et al. Analysis of the magnetization status to the magnetic stability of bonded NdFeB magnet[J]. Powder Metallurgy Industry, 2020, 30(03): 40-44.

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http://edit.chinamet.cn/Jweb_fmyjgy/EN/10.13228/j.boyuan.issn1006-6543.20190093 OR http://edit.chinamet.cn/Jweb_fmyjgy/EN/Y2020/V30/I03/40