摘要：【中文】本发明涉及了一种高方形度高磁能积钐钴永磁材料及制备方法，所述钐钴永磁材料的表达式为Sm(Co_{1‑u‑v‑w}Fe_uCu_vZr_w)_z，其中u＝0.25～0.5，v＝0.05～0.1，w＝0.018～0.033，z＝7～8。在固溶处理2～4h的固溶态磁体中，三角晶界及晶界附近有少量富SmCu相；固溶处理5～50h，固溶态磁体中晶界处富SmCu相向晶内扩散，时效态磁体中富SmCu相及富SmCuZr相逐渐消失，晶界连续光滑。本发明避免了常规成分及制备中晶界贫铜现象，大幅度提高了退磁曲线方形度，制备出高性能2:17型高铁含量钐钴永磁体。 【EN】The invention relates to a high-squareness high-magnetic energy product samarium cobalt permanent magnet material and a preparation method thereof, wherein the expression of the samarium cobalt permanent magnet material is Sm (Co)_{1‑u‑v‑w}Fe_uCu_vZr_w)_zWherein u is 0.25-0.5, v is 0.05-0.1, w is 0.018-0.033, and z is 7-8. In a solid solution state magnet subjected to solution treatment for 2-4 h, a small amount of SmCu-rich phase exists in a triangular crystal boundary and the vicinity of the crystal boundary; and (3) carrying out solid solution treatment for 5-50 h, diffusing the SmCu-rich phase in the crystal boundary of the solid solution magnet into the crystal, gradually eliminating the SmCu-rich phase and the SmCuZr-rich phase in the aging magnet, and continuously and smoothly forming the crystal boundary. The invention avoids the phenomenon of crystal boundary copper depletion in conventional components and preparation, greatly improves the square degree of a demagnetization curve, and prepares the high-performance 2:17 type samarium cobalt permanent magnet with high iron content.