The coating shows a poorer performance in continuous salt spray test than in cyclic corrosion test. Electrochemical measurements and in situ measurement of the elemental dissolution rates combined with the characterization of the corroded surface are used to argue in favor of an anticorrosion mechanism related to the barrier protection by corrosion products formed. Al and Fe oxides were formed in continuous test and aluminosilicates and a mixture of hydroxides after the cyclic test. The formation of specific corrosion products is assumed to be due to a specific surface pH evolution during corrosion testing.