Abstract
The anodic behaviour of iron in 1M H 2SO 4 has been analysed over a wide range of strain-rates (10 −4–10 −1 s −1) in terms of the maximum current reached during the deformation in the plastic region. Special emphasis is put on the passive domain of polarization. The current is found to follow a power law of the strain rate of which the exponent is lower than or equal to unity. By taking account of the specimen changes in length and diameter a model is derived on the basis of film breakdown and repair considerations. Computed data are in reasonably good agreement with experiments. The strain-rate dependence of the passive current is shown to be highly sensitive to the form of the repassivation decay considered.
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