Abstract
The anodic behavior of annealed Fe-Co (10∼100%) alloys was investigated in sulfuric acid solution at 30°C by means of a potentiostat. The results may be summarized as follows:
(1) Fe-Co (<30%) alloys have two passivities: The first passivity is due to the formation of ferrous sulphate, and the second one can be considered due to the formation of oxide film.
(2) In the case of Fe-Co (90%) alloy and Co metal, the passivation process can be considered as follows: CO2O3+H2O=2CoO2+2H++2e.
