Influencia del medio de ensayo y dirección de aplicación de la carga en el comportamiento a corrosión bajo tensiones de la aleación de aluminio 7075

Evaluation of the effect of Ni-P coating on the corrosion resistance of the aluminium 7075 T6 alloy

“…It has to be reminded that the experiment was carried in such a way that the electrolyte was in contact only with the coated surface. The contact area in all cases was of 0.54 cm 2 .…”

“…The corrosion current density (I corr ) was calculated using the equation 1Where, β a and β c where experimentally determined. The corrosion rate (mpy) was estimated by (2) where it was assumed that : MW, (molecular weight), was 53.44 g/mol (based on the coating composition), n was 2 equiv/mol, F is Faraday's constant, and ρ (density), was 8.1 g/cm 3 . Combining equations (1) and (2) and applying the appropriate conversion factors, the corrosion rate was related to the charge transfer resistance by the following relationship:…”