Abstract
The hard magnetic alloy Fe-28%Cr-7%Co-2%Mo-0.5%Si (in wt. %) was prepared by the methods of powder metallurgy. The maximum magnetic properties on the alloy was received after the TMT temperature of 540 °C and was the following: residual induction Br up to 1.3 T, coercive force Hc up to 40 kAm−1 and maximum energy product (BH)max up to 31 kJm−3. The hardness of the alloy increases from 228 to 250 HV 30 in the temperature range of spinodal decomposition at 600 – 660 °C. The coefficient of thermal expansion of the alloy is 13,1*10−6 K−1. It was found that the additional annealing of the alloy till 460 °C can increase the coercive force approximately for 6 kAm−1.
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