Research Article

Corrosion Protection of AA7075 Aluminium Alloy by Trimethoxy-Silanes Self-Assembled Monolayers

Table 2

Fitting parameters for the equivalent circuits used in this study.

Parameter Bared sampleaPTMS coatingbODTMS coatingb

(Ω cm2)20.819.321.0
(kΩ cm2)1.411.176.61
(kΩ cm2)0.781.344.5 × 102
(kΩ cm2)1.370.14
(F/(cm2 ))3.4 × 10−55.6 × 10−6
0.930.79
(F/(cm2 ))8.5 × 10−45.1 × 10−43.2 × 10−4
0.761.01.0
(F/(cm2 ))4.1 × 10−41.1 × 10−51.0 × 10−6
0.961.00.82
(W) (F/(cm2 ))1.6 × 10−3

Circuit on Figure 5(a). bCircuit on Figure 5(b).