电子辐照对稀土永磁材料稳定性的影响

Influence of electron irradiation on the stability of rare-earth permanent magnets

稀土永磁材料广泛应用于波荡器、同步辐射装置、粒子加速器等领域。在高能辐照环境中,射线粒子会对磁体的性能产生明显影响。影响磁体辐照稳定性的因素有材料矫顽力、磁体尺寸、磁体种类、射线能量等。本文依据相关文献,总结了影响磁体辐照稳定性的各种因素,并提出了改进磁体辐照稳定性研究的建议。

Rare earth permanent magnets are widely used in undulator, synchrotron radiation, particle accelerators and so on. Exposure of magnets to a flux of high-energy ioradiation can lead to a degradation in magnetic properties. The influence factors of radiation stability include coercive force, magnet size, magnet material type, radiation energy and so on. This paper surmizes the influence factors of radiation stability of rare earth magnet and give some advices on the research of improving radiation stability of the materials.