An environmentally friendly film formed on copper: Characterization and corrosion protection

作者：Rahal C; Masmoudi M^*; Abdelmouleh M; Abdelhedi R

来源：Progress in Organic Coatings, 2015, 78: 90-95.

DOI：10.1016/j.porgcoat.2014.09.018

• Coating
• Copper
• Silanic compounds
• Infrared spectra
• Corrosion

The formation of a protective layer of gamma-aminopropyltriethoxysilane (gamma-APS) on copper is studied by Fourier-transform infrared spectroscopy (FTIR and DRIFT), gravimetric chemical (Weight loss) and electrochemical (Potentiodynamic polarization) measurements. By simple immersion in the gamma-APS hydroalcoholic solution (90/5/5, v/v ethanol/water/silane), this silane immediately physisorbed on copper, but the protective effects are very poor. Contrary to the fresh and aged specimens, after heat treatment (curing or aging-curing), the gamma-APS adsorption is more a chemisorption than a physisorption. The Si-O-Si chains peak, the protective efficiency (P-EF), the full passivation range (Delta E) and the durability of the silane film increase from fresh < aged < cured < aged-cured samples.

• 出版日期2015-1