The protective performance of octadecyl-trimethoxy silane (ODTMS) coatings formed at different pH, on ZE41 magnesium alloy was evaluated using electrochemical impedance spectroscopy in 0.1 M sodium chloride solution, at different times of immersion. In general, the ODTMS coating resulted in an improvement in corrosion resistance. However, the maximum improvement was achieved in case of the specimens coated at pH 5. An electrical equivalent circuit that could simulate the experimental data and comply with the plausible hypothetical corrosion mechanism was developed. The simulated impedance plots (Bode plots) were found to be in good agreement with the experimental results.
|Title of host publication||50th Annual Conference of the Australasian Corrosion Association 2010: Corrosion and Prevention 2010|
|Number of pages||8|
|Publication status||Published - 1 Dec 2010|
- Electrical equivalent circuit
- Electrochemical impedance spectroscopy
- Octadecyl-trimethoxy silane
Chakraborty Banerjee, P., Singh Raman, R. K., Durandet, Y., & McAdam, G. (2010). Influence of pH of deposition of n-octadecyltrimethoxy silane coating on the corrosion resistance of a magnesium alloy. In 50th Annual Conference of the Australasian Corrosion Association 2010: Corrosion and Prevention 2010 (pp. 725-732)