Formation of calcareous deposit influences applied potential and current for long-term protection of offshore structures. A model is proposed to predict the applied potential-time history with an aim to establish mathematical correlation between applied potential on cathodically protected surface and time by computer simulation technique, following principles of electrochemical kinetics. Comparative studies between experimental and numerical analysis data show good agreement. The model opens up a method of determination of rate constant of kinetics of calcareous deposit formation. Effect of slope parameters on potential and current decay is also revealed.

Subject
Protection practices, Water, Offshore structures, Cathodic protection, Cathodic potential, Slopes, Constants, Experimental data, Fluids, Deposition rate, Scale formation, Polarized potential, Calcareous deposits
Keywords:
cathodic protection, calcareous deposit, slope parameter, potential decay, numerical simulation, offshore structure
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2003
Association for Materials Protection and Performance (AMPP)
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