Affiliation:
1. Tata Steel (India)
2. National Institute of Technology
Abstract
Abstract
The selection of precursors for silane-based anti-corrosive coatings to protect steel is challenging to obtain in a few experiments as the protection performance varies with types of precursor molecule and surface of metal substrates. The coating performance of precursors was predicted through quantum chemical calculations (Density Functional Theory (DFT) where DFT parameters such as hardness (ƞ), dipole moment (µ), and the number of electrons transferred (∆N) to metal substrate enabling us to choose suitable silane coupling agents. DFT study and experimental validation reveals that precursor containing functional groups like -NH2, -SH, and -O- offers better protection against corrosion to galvanized IF steel compared to those without functional moiety. The order of corrosion inhibition is MPTMS (1M) ≈ APTES (1A) > GPTMS (1G) > TEOS(1T).
Publisher
Research Square Platform LLC
Reference85 articles.
1. Sarbajit Banerjee, Hybrid nanostructured coatings for corrosion protection of base metals: a sustainability perspective;Dennis Robert V;Materials Research Express.,2015
2. Sol Gel Derived Organic-Inorganic Hybrid Coating: A New Era in Corrosion Protection of Material;Khanna AS;Corrosion Reviews,2006
3. Water-based & eco-friendly epoxy-silane hybrid coating for enhanced corrosion protection & adhesion on galvanized steel;Saheli Bera TK;Progress in Organic Coatings.,2016
4. Using Silane Films to Produce an Alternative for Chromate Conversion Coatings, Corrosion;Zaferani SH,2013
5. C. Jeffrey; Scherer Brinker, George W., Sol-Gel Science : The Physics and Chemistry of Sol-Gel Processing, Elsevier Inc, United States, 2013.