SmCo5 type samarium-cobalt permanent magnet material and preparation method and application thereof

The invention discloses a SmCo5 type samarium-cobalt permanent magnet material and a preparation method and application thereof. The preparation method comprises the steps that: S1, smelting and casting are conducted, specifically, samarium-cobalt raw materials are smelted and then cast to obtain cast ingots or cast pieces; S2, hydrogen decrepitation is conducted, specifically, hydrogen absorption is conducted on the cast ingots or the cast pieces at the temperature of 100-300 DEG C and the absolute hydrogen pressure of 0.05-1.1 MPa, and after hydrogen absorption is finished, dehydrogenation is performed to obtain coarse powder; S3, jet milling is implemented by carrying out jet milling on the coarse powder to obtain fine powder; S4, compression molding is conducted, specifically, the fine powder is subjected to oriented compression under a magnetic field, and a pressed blank is obtained; and S5, sintering and aging are conducted, specifically, the pressed blank is sintered in an inert atmosphere, slow coolin