Isothermal oxidation study on NiMnGa ferromagnetic shape memory alloy at 600-1000 °C

► Oxidation behavior of NiMnGa magnetic shape memory alloy was investigated. ► Oxidation constant increased with rising isothermal temperatures. ► According to XRD, intensity of martensite phase decreased with rising isothermal temperatures. ► The oxidation eliminated shape memory effect of alloy.