为了获得具有优异磁性能的氮化铁磁粉,本研究采用铁粉氮化制备γ′-Fe4N.优选氮化温度及氮化气氛,提高γ′-Fe4N的纯净度;将γ′-Fe4N与α-Fe的混合粉末高能球磨后,在240 ℃真空退火4 h,形成含5%左右α″-Fe16N2相的复合氮化铁磁粉.
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