An investigation into the Role of the Acid Catalyst on the Structure and Anticorrosion Properties of Hybrid Sol-Gel Coatings

Abstract This paper investigates the role of acid catalyst on structure and anticorrosion barrier performances a dual hybrid sol-gel coating composed 3-trimethoxysilylpropylmethacrylate zirconium complex deposited AA2024-T3 alloy. Along with variation in range 0.3 to 2, concentration silicate matrix is altered from 10 30%. Mol. The materials characterised using dynamic light scattering, Fourier-transform infrared spectroscopy, 29Silicon nuclear magnetic resonance while thermal behaviour identified by differential scanning calorimetry morphology analysed electron microscopy/energy dispersive x-ray spectroscopy. properties are electrochemical impedance spectroscopy neutral salt spray. It shown that has direct impact kinetics hydrolysis condensation reactions those effects can be controlled content zirconium. These individual or combined alterations found directly formation Si-O-Zr bonds, thus interconnectivity between modifier, resulting structures densities. For 20 % when pH lowered, relative concentrations siloxane bonds increased at expenses bonds. When 30 as increased, higher competition takes place preferentially formed over condensed Si-O-Si corrosion testing show coatings highest maximum, for exhibiting degrees.