RARE EARTH-IRON-BORON MATERIALS: A New Era in Permanent Magnets
RARE EARTH-IRON-BORON MATERIALS: A New Era in Permanent Magnets
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稀土-铁-硼材料：永磁体的新时代
DOI：
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发表时间：
1986
期刊：
影响因子：
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通讯作者：
F. Pinkerton
中科院分区：
文献类型：
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作者：
J. Herbst;R. W. Lee;F. Pinkerton
稀土-铁-硼（R-Fe-B）材料由于其在永磁应用中的巨大前景而引起了相当大的科学和技术兴趣。这一领域目前活动频繁，主要有两个具体因素。首先，已经由Nd-Fe-B合金制备了具有40-48 MGOe的能量积的磁体（1-3），该值明显大于先前获得的任何值。第二，因为元素成分Nd（或Pr）和Fe比Sm或Co（其包括基于SmCo 13或Sm 2Co 17的磁体）丰富得多，所以从经济角度来看，新材料是有吸引力的。我们的审查包括两个主要部分。我们开始与新的三元相，R2 FeI 4 B的讨论，从R-Fe-B系统的固有特性派生。然后介绍了目前用于制备实用磁体的快速凝固法和粉末冶金法，并对这两种方法的性能进行了比较。
Considerable scientific and technological interest has been focused on rare earth-iron-boron (R-Fe-B) materials because of their great promise for permanent magnet applications. Two specific factors are primarily respon sible for the high level of current activity in this area. First, magnets having energy products of 40-48 MGOe, values significantly larger than any previously attained, have been prepared from Nd-Fe-B alloys (1-3). Second, because the elemental constituents Nd (or Pr) and Fe are much more abundant than Sm or Co, which comprise magnets based on SmCoj or Sm2Co 17, thc new materials are attractive from an economic perspective. Our review consists of two major parts. We begin with a discussion of the novel ternary phases, R2FeI4B, from which the intrinsic properties of the R-Fe-B systems derive. Then we describe the rapid solidification and powder metallurgy methods presently used to prepare practical magnets, and we compare the properties of those magnets.