Contemporary Modes of Corrosion Protection and Functionalization of Materials

Abstract

Corrosion protection is an important global issue. Corrosion affects all metal materials in industry, infrastructure, civil engineering, transport, biomedicine, etc. causing their deterioration and degradation. Corrosion protection is a necessity which enables the safe and well-functioning of metal structures and devices. In addition to long-term efficiency, corrosion protection should be environmentally and economically acceptable. Growing population with needs on modern and high-tech technologies is boosting consumption of base and rare earth metals. All these issues are putting high demands on area of corrosion protection with the main goal to prolong the lifetime of metal materials, reduce the need for steeply increasing production and thus preserve resources. In this review contemporary modes of corrosion protection of metal materials with the emphasis on copper and aluminium base alloys as one of most important base metals are presented. These include corrosion inhibitors, conversion, sol-gel and hydrophobic coatings. Examples are our research studies over the last decade are presented.

Surface Stoichiometry and Roughness of a Degraded A380 Alloy after Casting, Technical Cleaning and Packaging

“…However, when the native aluminium oxide containing surface defects that can lead to water adsorption (or absorption) is not sufficient against further corrosion in strong environments, the addition of other passivating agents is recommended [ 22 ]. Sol–gel and hydrophobic coatings are also being increasingly used as surface modifications to improve corrosion performance [ 47 , 48 , 49 ].…”

“…The cast aluminium–silicon alloy under investigation is generally used for automobile engine parts, especially cylinder heads [ 3 , 4 , 11 , 36 ]. Every loss of structural integrity can lead to serious damage of metallic components [ 49 ]. Dimensional tolerance may be lost, and there is a possibility of damage to the material at the contact surface and/or the contamination of the working media [ 28 , 52 ].…”

DFT investigation of 2-mercaptobenzothiazole adsorption on model oxidized copper surfaces and relationship with corrosion inhibition

“…Its prevention is thus a crucial issue. One of the solutions to mitigate corrosion is the use of organic corrosion inhibitors [1,2,3,4], that are considered as promising candidates to replace chromate-based coatings [5,6,7]. Various organic compounds containing nitrogen, oxygen and sulfur heteroatoms, polar functional groups, and conjugated double bonds are used to prevent the corrosion of copper [8,9,10,11,12,13,14,15,16,17].…”

Application of Commercial Surface Pretreatments on the Formation of Cerium Conversion Coating (CeCC) over High-Strength Aluminum Alloys 2024-T3 and 7075-T6

“…Great efforts have been made in order to look for alternatives to CrCC [12]. The great number of possibilities includes conversion coatings based on trivalent chromium [13], rare earths chemical conversion coatings [14,15], Zr/Ti-based chemical conversion coatings [16], sol-gel coatings [17], and smart coatings providing selfhealing protection [12,18,19]. However, none of these options has achieved a true industrial application capable of replacing CrCC and the scientific community continues to search for an alternative.…”