Nanostructured Coatings: Review on Processing Techniques, Corrosion Behaviour and Tribological Performance

Abstract

Corrosion and tribology are surface phenomena. Modifying surfaces of materials without resorting to altering their bulk properties is an effective route to alleviate corrosion, friction and wear, encountered in engineering applications. With the advancements in the field of nanotechnology, surface protective coatings with nanomaterials can be readily developed to explore their functionality in mitigating chemical/physical damage of surfaces. Surface protection enhances performance and operating lifetimes of industrial machinery components. This review presents insights on various types of recently developed nanostructured coatings, their synthesis routes, corrosion behaviour and tribological performance. It provides the state-of-the-art information on the development of nanostructured coatings, namely, ceramic coatings, metallic coatings and nanocomposite coatings with metal and polymer matrices. Biomimetic approaches in making nanostructured coatings and challenges encountered in the development of nanostructured coatings are highlighted.

Nanostructured coatings based on metallic nanoparticles as viral entry inhibitor to combat COVID-19

“…Several methods have been reported for fabrication of metallic nanoparticle based coating on the surface of various substrates. Some of the commonly used methods to apply metallic nanoparticles based surface coatings are summarized in Table 1 along with the brief description about advantages and disadvantages of each approaches [ 22 , [30] , [31] , [32] ]. Among these methods, dip-coating, spray-coating and dip coating have been used extensively for nanoparticle coatings because of their simplicity in application and easy to handle without requirement of any special equipment [ 22 , 33 , 34 ].…”

“… Easy operation Scalable process Respraying option offer repairing No any requirement of specific substrate Optimization of evaporation rate of solvents. [ 22 , 30 , 35 ] Spin-coating In this process, coating procedure generally completed in four successive stages: (i) applying coating solution on the surface of target substrate, (ii) spin up at a particular speed for a certain time, (iii) spin off, (iv) evaporation of residual solvents and drying. Fine coating can be prepared with uniform and thin layer.…”

“… Possibility of wastes of coating materials during high speed of spinning process. [ 22 , 30 , 35 ] Vapor deposition method This method involves multidirectional deposition of coating materials on the surface of heated substrate. Facile, rapid and easy applicable Hierarchical structure can be prepared Commonly applicable to selective substrates such as metallic or ceramic composition Unsuitable for cellulose other soft materials Requirement of specific heat treatment at high temperature [ 38 ] …”

Effect of Ca and Sb on the Corrosion Resistance of E690 Steel in Marine Atmosphere Environment

“…Several methods have been proposed to improve the corrosion resistance of steel in marine environments [9][10][11]. These methods include the addition of corrosion inhibitors [12,13], coatings [14][15][16], and alloying elements [13,17,18]. Corrosion inhibitors, such as organic and inorganic compounds, have been extensively studied and shown to effectively reduce the corrosion rate of steel in seawater [19].…”

Formation and Antibacterial Activity of AlOOH/Ag Composite Coating on Macroporous α-Al2O3 Ceramics

“…Ceramics surfaces can be modified with nanoparticles formed by physical or chemical vapor deposition, laser cladding, sol-gel method, etc. [33,34]. However, not all methods are suitable for the surface modification of porous ceramics.…”