Abstract
This experiment was carried out to. investigate the magnetic properties of Sm-Fe-Co-V-Cu-Nb system nitriding compounds with SmFe7 type structure. The Sm10(Fe0.95Co0.05)81V5.0Cu1.0Nb3.0 alloy ribbons were prepared by the single roller liquid rapid-quenching method. And the effect of roller velocity, heat-treatment and nitrogenation on some properties were investigated. The optimum preparation condition and some properties are as forrows: roller velocity -50m/s; pre-heating condition -700°C×70min in high-purity Ar atmosphere; nitriding condition -500°C×5h in high-purity N2 gas at pressures of 4.9 MPa; magnetic properties -HcJ=554.6 kA/m (6970 Oe), σr=91.11×10-6 Wb⋅m/kg (72.54 emu/g), σs, =128.2×10-6 Wb⋅m/kg (102.1 emu/g), Tc=457.4°C; lattice constant -a=0.5007 nm, c=0.4316 nm, c/a=0.8620.
