41 42 As the dissolved salt content of the electrolyte increases, the TF solubility of the corrosive gases decreases. Corrosion rate increases when NaCl concentration of the TF electrolyte is less than 3 wt %. Corrosion rate increases when NaCl content of the electrolyte increases from 3 to 20 wt% although oxygen is present. TF 43 44 TF The conductivity of a solution is a measure its ability to transport current. Corrosion rate increases when calcium salt form on the metal has negative saturation index (SI). 45 TF