The potential profile and occurrence of calcareous deposits within simulated fatigue cracks of mild steel specimens has been investigated as a function of cathodic potential, cyclic frequency, and nominal electrolyte velocity. The experiments also included preliminary investigation of the chemistry and structure of the deposits. A model is presented to rationalize the observations, and it is deduced that dissolved oxygen concentration within the crack, as determined by mass transport associated with the crack electrolytic ejection-injection process and by the oxygen reduction reaction, is particularly important.
© National Association of Corrosion Engineers
1987
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