iron seltenerdmetall alloy with nitrogen and carbon existing dauermagnetmaterial

摘要

PCT No. PCT/CA93/00341 Sec. 371 Date Feb. 15, 1995 Sec. 102(e) Date Feb. 15, 1995 PCT Filed Aug. 20, 1993 PCT Pub. No. WO94/05021 PCT Pub. Date Mar. 3, 1994Magnetic materials containing a rare earth metal, and iron or a similar metal, as well as nitrogen and carbon, are produced by gas absorbing nitrogen and carbon sequentially into a parent intermetallic compound; the resulting magnetic materials have high Tc, mu oMs and mu oHA, are essentially free of alpha -Fe, and have a coercivity at 300 DEG K. of at least 1.5 T. Anisotropic magnetic materials are produced by pretreating the intermetallic compound, which contains carbon, by powder sintering or oriented hot shaping, followed by nitriding and/or carbiding.