In order to explore the effect of addition rare earth (RE) a steel microstructure and consequent performance nitrided layer, plasma nitriding was carried out on 38CrMoAl in an atmosphere NH3 at 550 °C for 4, 8, 12 h. The modified layers were characterized using optical microscope (OM), microhardness tester, X-ray diffraction (XRD), scanning electron (SEM), transmission (TEM), electrochemical wo...
