Magnetic Hysteretic Properties of a Powdered Fe–27Cr–10Co–1Mo Hard Magnetic Alloy

Resumo

The magnetic hysteretic properties of an Fe–27Cr–10Co–1Mo (27Kh10K1M) magnetic hard alloy are studied. Residual induction B_r (up to 1.36 T), coercive force H_cB (up to 45.4 kA/m), and maximum energy product (BH)_max (up to 44 kJ/m³) have been evaluated using the Statgraphics Centurion XVI software package after optimum heat treatment. The obtained data are higher than those of a commercial iron–chromium–cobalt 25Kh15KA alloy (Russian Standard GOST 24897–81) by 15–20% on average. Different optimum heat treatment of the alloy is shown to be required to obtain the optimum values of its residual induction B_r, coercive force H_cB, and maximum energy product (BH)_max.