YTTRIUM-ADDED RARE-EARTH PERMANENT MAGNETIC MATERIAL AND PREPARATION METHOD THEREOF

摘要

In the rare earth permanent magnet material adding yttrium and its manufacturing method, the chemical formula of the material is expressed as (Y _x RE _1-x ) _a Fe _bal M _b N _c by atomic percentage, of which 0.05 _{≤ x ≤} 0.4 And 7≤a≤13, 0≤b≤3, 5≤c≤20, and the extra is Fe, that is, bal=100-abc; RE is a rare earth element Sm or a rare earth element Sm and Zr, any one of Nd and Pr or a combination of several elements, M is Co and/or Nb, and N is a nitrogen element. The above manufacturing method replaces the Sm element of the samarium iron nitrogen material with the rare earth Y element and lowers the viscosity of the alloy solution by adjusting the ratio of the Sm element and the Y element, increasing the amorphous formation ability of the material, reducing production cost, and reducing grain size. The non-uniformity of the size distribution effectively avoids the effect of deterioration in magnetic performance, which is advantageous for improvement of magnetic performance, and the magnetic performance of the magnetic powder obtained by improving the closed end, which has high coercivity and low residual magnetism, is It is more suitable for performance demands and compensates for the lack of magnetic performance in electromechanical applications.