The corrosion resistance of three Fe40Al+lOAl2O3-based sprayed intermetallic alloys with different boron contents in molten sodium sulfate (Na2S04) and sodium metavanadate (NaV03) has been evaluated using the weight loss technique. Boron content was 0.1 (at.%), 0.2 and 0.4 and the temperature varied from 873 K to 973 K for NaV03, and from 1173 K to 1273 K for Na2S04at 25 K intervals. The tests were also supported by electronic scanning microscopy and microanalys.is. In all cases, less corrosion resistance was obtained in the alloy with 0.4 B, whereas good corrosion resistance was found in the alloy with 0.1 B. The results were discussed in terms of dissolution of the external Al2O3 layer by the salt and internal sulfidation.