چکیده مقاله
In this study, the sol–gel process is used to prepared silica xerogels using various basic and acidic ammonium hydroxide, hydrochloric acid, nitric acid, acetic acid catalysts with the same precursor Tetraethyl orthosilicate – TEOS and solvent ethanol and applied on carbon steel by using dip coating technique Optical Microscopy and Scanning electron microscopy SEM and energy dispersive X ray EDS is used to analyze the microstructure of xerogels Hydrolysis and condensation of sol gel are the main mechanisms to control size, distribution of particles and It is found that the type of catalysts which used in synthesis of xerogels affect the cracks and uniformity of films were related to the microstructure of silica xerogels, which depends on the catalysts used in the sol–gel process, then, the cracks and uniformity of films were investigated by mentioned analysis The cracks of coated films were decreased by using acetic acid and hydrochloric acid which showed more uniformity than the other films which synthesis by different catalysts, and confirmed suitability for anticorrosive coating applications to protect metal alloys against corrosion
کلیدواژهها
نویسندگان
Mohammad Bahrami Gargari
Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran
Ramin Karimzadeh
Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran
Ali Eslamimanesh
Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran
شیوه ارجاع
Bahrami Gargari, Mohammad and Karimzadeh, Ramin and Eslamimanesh, Ali,1403,Effect of sol–gel catalyst on the microstructure of silica-based xerogel films for eco-friendly anticorrosion films,The second national and the first international conference of environmental challenges: green industry and mining ,Tehran
ارائهشده در
مجموعه مقالات دومین کنفرانس ملی و اولین کنفرانس بین المللی چالش های محیط زیست: صنعت و معدن سبز25 اردیبهشت 1403 · تهران