自一九七一年出现Fe—Cr—Co系可加工永磁后,由于它的磁性能和铸造的Alnico5合金接近,又能承受冷热变形和切削加工而制成板、带、棒、丝、管材等,因此能为电子等工业和科学技术的发展所要求的永磁合金元件的小型化、复杂化提供物质基础。几年来国内外进行了大量的研究工作,在三元Fe—Cr—Co合金基础上,添加第四、第五元素,已把磁 Since the Fe-Cr-Co machinable permanent magnet appeared in 1971, it has been made into plates, strips, rods and filaments due to its magnetic properties close to that of the cast Alnico5 alloy and its ability to withstand hot and cold deformation and cutting , Pipes, etc. Therefore, it can provide the material basis for the miniaturization and complication of the permanent magnet alloy elements required for the development of industries such as electronics and science and technology. Over the past few years at home and abroad conducted a lot of research work, based on the ternary Fe-Cr-Co alloy, add the fourth and fifth elements, has magnetic