This work was conducted to investigate the corrosion protection of silane-based coatings on the 304 stainless steel substrate in a 0.1 M H 2 SO 4 solution. Tetraethoxysilane (TEOS), 3-(Aminopropyl) triethoxysilane (APTS) and silicon carbide nanoparticles were coated onto the 304 stainless steel substrate by the sol–gel deposition method. The corrosion behavior of the bare metal and the coated substrates was evaluated using potentiodynamic polarization tests and electrochemical impedance spectroscopy (EIS). In addition, scanning electron microscopy (SEM), a field Emission scanning electron microscope (FE-SEM), X-ray diffraction (XRD) and attenuated total reflectance-Fourier transform infrared spectrometer (ATR-FTIR) were employed for the evaluation of surface properties. The corrosion studies demonstrated that the silane coating containing silicon carbide nanoparticles exhibited superior corrosion resistance than the bare 304 stainless steel. Addition of silicon carbide nanoparticles resulted in the more simultaneous formation of crosslink Si–O–Si bonds, according to the ATR-FTIR observations. The silane coating including nanoparticles produced a homogenous and highly adherent protective nanostructure coating on the stainless steel substrates.
