In order to understand the effect of oxygen content on pitting corrosion resistance of steels,the pitting initiation and pitting propagation of laser cladding coatings with four different contents of oxygen were studied.The pitting susceptibility was compared by means of the polarization and electrochemical impendence spectroscopy(EIS) tests in 3%(mass percent) NaCl solution with pH of 10.The pitting propagation rate was evaluated in artificial seawater by simulating the occluded corrosion cell test.The com...