Magnetic Properties of Hard Magnetic Alloy Fe – 28% Cr – 13.4% Co – 2% Mo – 0.5% Si

Resumo

The method of regression analysis is used to obtain equations describing the dependences of magnetic hysteresis properties of magnetically hard powder alloy Fe – 28% Cr – 13.4% Co – 2% Mo – 0.5% Si on regimes of thermomagnetic treatment (the temperatures of the start of the treatment and the rates of cooling in magnetic field). The determined treatment modes make it possible to obtain in an alloy with a coercive force H_c up to 40 kA/m, a residual induction B_r up to 1.2 T, and a maximum energy product (BH)_max up to 25 kJ/m³. The alloy may find application in the production of rotors of synchronous hysteresis-reluctance motors.