Scale Modeling for Corrosion Studies^☆

Scale modeling of structures for corrosion studies is discussed. The ways in which specimen size can affect corrosion reactions are discussed, including edge effects, electrolyte volume, coatings, and statistical processes like pitting. Scale modeling of corrosion current distributions is discussed for both galvanic corrosion and cathodic protection. The relationship of electrolyte to polarization resistance is emphasized, and the rationale behind scaled-resistivity modeling is examined. The use of the Wagner polarization parameter and computer modeling are discussed relative to scale modeling.