Hysteresis motor using magnetically anisotropic Fe-Cr-Co magnet

High-strength magnetically hard Fe-Cr-Co-Based alloys with reduced content of chromium and cobalt

“…This work presents the results of the investigation of the magnetic and mechanical properties of alloys, in which the contents of Cr and Co are below the bound ary of miscibility gap of the homogeneous solid solu tion at 640°С and were varied in the ranges of 12-20% Cr and 12-14% Co. All the alloys produced contained 8-10% tungsten and 0.5% gallium, which, as was established earlier [11,12], have a positive effect on the strength properties and plasticity.…”

“…In particular, such materials are applied for the production of disc rotors of hysteresis motors [11]. In [12] it is reported about the development of a hysteresis motor for a large diesel turbocharger, where the rotor material is a com mercial ARNOKhROM 111 alloy of the Fe-Cr-Co system.…”

Texture, microstructure and magnetic properties of Fe–28Cr–15Co–3.5Mo permanent magnet

“…[3,4]. Permanent magnetic properties in Fe-Cr-Co alloys are resulted from spinodal decomposition; whereby high-temperature bcc phase a breaks down into two spinodal phases known as Fe, Co-rich a 1 and Cr-rich a 2 that are stabilized by annealing the alloy in the temperature range 560-650 1C [5,6] depending upon the composition of the alloy. Permanent magnets based on Fe-Cr-Co alloy system were discovered in 1972, by Kaneko et al [7].…”

Phase field simulation of microstructure evolution in Fe–Cr–Co alloy during thermal magnetic treatment and step aging

“…Fe-Cr-Co permanent magnetic alloys have been widely studied due to their combination of good ductility and excellent magnetic properties [1][2][3]. The magnetic hardening of the alloys is associated with the spinodal decomposition within the miscibility.…”