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自从 70年代发生钴资源危机之后 ,全世界都掀起了无钴磁体的研究热潮。首先开发成功铁 -钼 -镍系磁性合金 ,并发现Ｆｅ 2 0Ｍｏ 5Ｎｉ(质量比 )合金具有最好的磁性能 ,该合金经过热轧后 ,12 0 0℃固溶 ,随后经30 %冷轧、6 10℃× 4ｈ磁时效之后具有如下性能 :剩磁Ｂｒ=1 0 5Ｔ(
Since the cobalt resource crisis occurred in the 1970s, there has been a worldwide search for cobalt-free magnets. First, the successful development of iron-molybdenum-nickel magnetic alloys, and found Fe 2 0Mo 5Ni (mass ratio) alloy has the best magnetic properties of the alloy after hot rolling, solid solution at 1200 ℃, followed by 30% cold-rolled , 6 10 ℃ × 4h after magnetic aging has the following properties: remanence Br = 1 0 5T (