Coercivity of Nd-Fe-B-type Fine Particles Prepared from Different Precursor Materials
作者： K.M. Kim , H.W. Kwon , J.G. Lee , J.H. Yu
DOI: 10.4283/JMAG.2015.20.1.021
关键词: Particle size 、 Ball mill 、 Magnet 、 Sintered magnets 、 Surface oxidation 、 Coercivity 、 Materials science 、 Composite material 、 Grain size
摘要: Fine Nd-Fe-B-type particles were prepared by ball milling of different types Nd-Fe-B precursor materials, such as die-upset magnet, HDDR-treated material, and sintered magnets. Coercivity dependence on the grain particle size powder was investigated. milled reduced decreased, extent coercivity loss dependent upon material. in finely attributed to surface oxidation. The fine closely linked materials. more profound for with larger size. Contrary from magnets (~10 ㎛) magnet material much finer still retained high (＞ 10 kOe ＞ 4 material).
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