Samarium cobalt permanent magnet material and preparation method and application thereof

The invention discloses a samarium-cobalt permanent magnet material and a preparation method and application thereof. The preparation method of the samarium-cobalt permanent magnet material comprises the following steps: carrying out molding, sintering, aging treatment and heat preservation on samarium-cobalt magnet alloy powder; in the aging treatment, the pre-aging temperature is 650-750 DEG C, and the time is 2-5 hours; the temperature T of primary aging is equal to (M1 * a + N1) DEG C; m1 is in the range of 19.95 to 20.05; n1 ranges from 445 to 455; a is a numerical value obtained by multiplying the content of Fe by 100; the first-stage aging time t is equal to (M2 * T + N2) min; m2 is (-9.95) to (-10.05); and N2 is 9695 to 9705. According to the samarium-cobalt permanent magnet material, when the Fe content reaches up to 20-25 wt%, the residual magnetism can be continuously adjusted, and the samarium-cobalt permanent magnet material has a better magnetic domain structure, so that the residual magnetism,