The aluminizing treatment on the surface of Cu-Al-Y alloy with addition of rare earth compound CeCl3 wa.s carried out. The followed internal oxidation of the aluminized Cu-Al-Y alloy was also carried out in the commercial nitrogen gas medium. The experimental research and theoretical analysis have been made. Results show that the addition of rare earth oxide CeCl3 has great accelerating effect on the aluminizing and internal oxidation processing. It is possible to generate Al2O3 dispersed hardening layer in...