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Microstructure and magnetic properties of sintered Nd-Fe-B magnets with high hydrogen content
Guo S ; Zhou QY ; Chen RJ ; Lee D ; Yan AR
2011-06-09
Conference Name55th Annual Conference on Magnetism and Magnetic Materials
Conference Date2010-11-01
Conference PlaceAtlanta, GA
description.cooperation其它
ISSN0021-8979
AbstractThe effects of hydrogen contents after the process of hydrogen decrepitation on the magnetic properties and corrosion resistance of sintered Nd-Fe-B permanent magnets have been studied. The intrinsic coercivity of the magnets increases and the remanence decreases with increasing hydrogen content. High residue hydrogen content in the starting ingot leads to the reaction of hydrogenation, disproportionation, desorption and recombination in the sinter process resulting in magnets with low remanence. The results of highly accelerated temperature/humidity stress test indicate that excessive hydrogen contents are harmful to the corrosion resistance of the magnets. The influences of residue hydrogen contents on the corrosion resistance of magnets dominate only when the residue hydrogen content exceeds 1300 parts per million.
KeywordDesorption Hddr
Indexed BySCI
Language中文
Document Type会议论文
Identifierhttp://ir.nimte.ac.cn/handle/174433/1952
Collection宁波所知识产出
Recommended Citation
GB/T 7714
Guo S,Zhou QY,Chen RJ,et al. Microstructure and magnetic properties of sintered Nd-Fe-B magnets with high hydrogen content[C],2011.
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