Abstract
This study investigated the effects on the magnetocaloric properties and corrosion resistance of Cr substitution for Fe in (Mn,Fe)2(P,Si) alloys. The characteristics of the first-order phase transition and the crystal structure were maintained, even after Cr substitution. In particular, a discontinuous change in the lattice parameters was exhibited during the transition from the ferromagnetic to paramagnetic phase at the Curie temperature. Increasing the Cr content reduced the Curie temperature and isothermal entropy change. The thermal hysteresis gradually increased by increasing the Cr content. Meanwhile, the small Cr content maintained the adiabatic temperature change and improved the corrosion resistance. Therefore, the tuning of the Cr content in (Mn,Fe)2(P,Si) alloys can provide possible applications due to their notable magnetocaloric properties and improved corrosion resistance.
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