A corrosion resistant Ni2Si/Ni3Si2 silicide alloy coating was fabricated on a substrate of low carbon steel A3 by laser cladding of the Ni76Si24 alloy powders. The laser clad silicide alloy coating has a rapidly solidified homogeneous microstructure consisting of plate like Ni2Si primary phase and minor amount of Ni2Si/Ni3Si2 eutectics and is metallurgically bonded to the steel substrate. The corrosion resistances of the silicide alloy coating in the water solutions of 0.5mol/l H2SO4 and 3.5% NaCl were evaluated utilizing the electrochemical polarization corrosion test method. Because of the inherent excellent corrosion resisting properties of the constituting phases Ni2Si and Ni3Si2, and the rapidly solidified homogeneous microstructure, the laser clad Ni2Si/Ni3Si2 silicide alloy coating exhibits excellent corrosion resistance.