High-energy Fe-Cr-Co permanent magnets with (<i>B</i> <i>H</i>)max ≃8–10 MG Oe
M. HommaDepartment of Materials Science, Faculty of Engineering, Tohoku University, Sendai, Japan 980E. HorikoshiDepartment of Materials Science, Faculty of Engineering, Tohoku University, Sendai, Japan 980T. MinowaDepartment of Materials Science, Faculty of Engineering, Tohoku University, Sendai, Japan 980M. OkadaDepartment of Materials Science, Faculty of Engineering, Tohoku University, Sendai, Japan 980
1980en
ABI
Abstract
A series of new high-energy Fe-Cr-Co magnet alloys with (BH)max≃8–10 MG Oe have been developed. An Fe-22Cr-15Co alloy with equiaxed grain structure achieves (BH)max=8.3 MG Oe utilizing the abnormal shape of the miscibility gap of the system. The addition of Mo to the alloys enhances the anisotropic decomposition and the development of &lt;100≳ columnar grains further improves the magnetic properties up to (BH)max=9.5 MG Oe.
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