Abstract
Many of traditional anti-corrosion approaches using chromate are effective but hazardous to natural environment and human health, so development of green and effective alternatives is desirable. One of the mussel adhesive proteins derived from mussel byssus presents extraordinary adhesion to steel surface and exhibits film-forming and corrosion inhibition properties. Novel strategies for enhancing the corrosion inhibition of steel by the protein have been demonstrated recently. The protein together with ceria nanoparticles presents a great potential for the development of new corrosion inhibitors and thin films that are ‘green’ and ‘effective’, and have ‘smart’ protection properties.
Highlights
Metal corrosion is a serious material degradation problem from both economic and structural integrity standpoints
Based on the above-mentioned observations, a nanocomposite film composed of Mefp-1, ceria nanoparticles and phosphate has been developed (Chen et al, 2017), which provides a self-healing effect against pitting corrosion of carbon steel
The adhesion and cohesion properties of the Mefp-1 film can be reversibly tuned via electrochemical potential
Summary
Metal corrosion is a serious material degradation problem from both economic and structural integrity standpoints. At least six adhesive proteins have been extracted and identified from several species of mussel, and named as Mytilus foot proteins (Mfp, plus a number indicating the chronological order of identification; Zhao et al, 2006). These proteins present a basic isoelectric point due to the high content of posttranslational modified amino acid residues (Waite and Tanzer, 1980; Waite, 1983b). The 3, 4-dihydroxyphenylalanine (DOPA) has been recognized as the primary residue response for both adhesion and cohesion properties of the proteins
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