Abstract
The use of surface engineering techniques to tune-up the composition of nanostructured thin-films for developing functional coatings with advanced properties is a hot topic within the scientific community. The control of the coating structure at the nanoscale level allows improving the intrinsic properties of the surface compared to bulk materials. A nanodeposition technique with increasing popularity in the field of nanotechnology is electrospinning. This technique permits the fabrication of long and continuous fibres on the micro-nano scale. The good control over fibre morphology combined with its simplicity, cost-effectiveness, easy exploitability and scalability make electrospinning a very interesting tool for technological applications. This review is focused on the use of the electrospinning technique to protect metallic surfaces against corrosion. Polymeric precursors, from natural or biodegradable to synthetic polymers and copolymers can be electrospun with an adequate control of the operational deposition parameters (applied voltage, flow rate, distance tip to collector) and the intrinsic properties of the polymeric precursor (concentration, viscosity, solvent). The electrospun fibres can be used as an efficient alternative to encapsulate corrosion inhibitors of different nature (inorganic or organic) as well as self-healing agents which can be released to reduce the corrosion rate in the metallic surfaces.
Highlights
The development of surface engineering techniques has made available many surface treatments and coatings to improve the corrosion resistance of metallic materials
Electrospinning is a fast emerging technique which enables the fabrication of nanofibres with a desired morphology, attracting the attention in the nanotechnology field for the design and development of nanomaterials
The advantages associated to this nanodeposition technique such as simplicity, versatility, cost-effective and scalability make electrospinning of great interest for technological applications which can provide corrosion protection of metallic surfaces
Summary
The development of surface engineering techniques has made available many surface treatments and coatings to improve the corrosion resistance of metallic materials. 1, since thethe number of research works on electrospinning and and corrosion resistance published in scientific journals has steadily increased, on account of the corrosion resistance published in scientific journals has steadily increased, on account of the remarkable remarkable simplicity, versatility, easy functionalization andofpotential uses of thistechnique nanodeposition simplicity, versatility, easy functionalization and potential uses this nanodeposition in the technique in the field of corrosion protection The use ofIncorrosion inhibitors or self-healing for and development of corrosion protection this section, a review of all the agents polymeric improving the corrosion resistance of the metallic surfaces (namely steel, aluminium and magnesium precursors (biodegradable or synthetic origin) as well as the use of corrosion inhibitors or self-healing alloys) evaluated. Are sum up, to the best of our knowledge, this is the first time that a review on the implementation of electrospun fibres for corrosion protection is presented in the literature
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