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一九八三年下半年,日本住友金属公司的一个以Sagawa(佐川真人)为首的研究小组宣布发明了磁能积达到36-38MGOe的Nd—Fe—B烧结永磁体。 稀土铁基永磁与Sm-Co永磁相比,具有不含钴、钐,成本较低同时磁能积更高的特点。2:17型Sm-Co磁体的磁能积一般只能达
In the second half of 1983, a research group headed by Sagawa Corp. of Japan Sumitomo Metal Co., Ltd. announced the discovery of a Nd-Fe-B sintered permanent magnet with a magnetic energy product of 36-38 MGOe. Compared with Sm-Co permanent magnet, rare earth-based iron-based permanent magnet has the characteristics of containing no cobalt and samarium and having lower cost and higher magnetic energy product. 2:17 type Sm-Co magnet energy products generally only reach