ENHANCED COERCIVITIES IN DIE-UPSET ND-FE-B MAGNETS WITH DIFFUSION-ALLOYED ADDITIVES (ZN, CU, AND NI)

被引:41
作者
FUERST, CD
BREWER, EG
机构
关键词
D O I
10.1063/1.102934
中图分类号
O59 [应用物理学];
学科分类号
摘要
Rapidly solidified Nd-Fe-B ribbons were crushed and mixed with a fine powder (10-100μm) of a pure element before hot working into fully dense anisotropic magnets. At the high temperatures and pressures required for densification some additives diffused throughout the ribbon matrix and presumably into the neodymium-rich phase surrounding the Nd2Fe 14B grains. In small concentrations (0.5-0.8 wt%), zinc, copper, and nickel additions enhanced the coercivities of die-upset magnets by 100%, 77%, and 53%, respectively. Additives which did not diffuse thoroughly, such as manganese, had no measurable effect on the coercivities.
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页码:2252 / 2254
页数:3
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