Corrosion Inhibition of Aluminum in Hydrochloric acid Solution Using Ceria Doped Polyvinyl Chloride Nanofiber.

Abstract

This aim of the percent work is to develop new, cost effective, high performance, lightweight polymer matrix composite nanofiber for corrosion resistance of aluminum in 0.1 M hydrochloric acid (0.1 M HCl) solution. Cerium oxide nanoparticles (ceria NPs) are embedded in-situ in poly vinyl chloride (PVC) solution, and then formed as nanofibers using electrospinning technique. The formed nanocomposite coating of PVC is successfully deposited on aluminum substrates; considering these substrates as metallic target in the electrospinning procedure. Measurements of corrosion for aluminum substrate before, and after coating with polymer nanofiber in 0.1 M HCl solution is performed using potentiodynamic polarization ,and electrochemical impedance spectroscopy techniques. Potentiodynamic polarization and electrochemical impedance results confirm that ceria NPS embedded in-situ within PVC NFS coatings protect the aluminum surface from being corroded through minimizing both of its corrosion rate, corrosion current and increasing the surfaces' polarization resistance. The morphologies of polymer nanofiber coatings are imaged using scanning electron microscopy (SEM), with detecting the optical characteristics of the synthesized nanocomposite to prove the existence of oxygen vacancies associated to tri-valent cerium ions via optical analysis such as direct band gap, and fluorescence measurements. These vacancies are considered physical adsorbers for radicals which consequently reduces the corrosion rate. Average mean diameter of ceria NPS was measured using transmission electron microscopy (TEM).

Electrospinning: A Powerful Tool to Improve the Corrosion Resistance of Metallic Surfaces Using Nanofibrous Coatings

“…The experimental results confirmed the release of inhibitor from the inhibiting nanonetworks and subsequent formation of protective cerium oxides and hydroxides at the scribe surface, reducing the natural aluminium corrosion process. In work [66], cerium oxide nanoparticles (ceria NPs) are embedded in situ in PVC nanofibres, providing good corrosion resistance as demonstrated by EIS experiments.…”

“…PVC/Ceria NPs Aluminium Cyclic potentiodynamic polarization and Electrochemical Impedance Spectroscopy (EIS) [66] PVA@PVDF doped with MBT Q345 carbon steel Scanning Kelvin Probe (SKF) and Electrochemical Impedance Spectroscopy (EIS) [67] PDMS/PDES@PVA DBTL@PVA Carbon steel Linear polarization [68] PVA@(OA+BTA) Carbon steel Electrochemical Impedance Spectroscopy (EIS) [69] Nylon/BTA Copper Electrochemical Impedance Spectroscopy (EIS) [70] PVDF-ZnO Aluminium alloy Tafel polarization curves and Electrochemical Impedance Spectroscopy (EIS) [71] PVC-ZnO Aluminium alloy (AA6061-T6) Tafel polarization curves and pitting corrosion [72] PVC-ZnO PS-ZnO Aluminium alloy (AA6061-T6) Tafel polarization curves and pitting corrosion [73] CA nanofibres and HAP/CHI solution by dip-coating 304 stainless steel Electrochemical polarization curves and electrochemical impedance [77] PCL and epoxy resin by spin-coating Carbon steel Linear sweep voltammetry [78] TPOZ+GPTMS and PVA doped with Ce(NO 3 ) 3…”

Studying effect of plantain extract behavior as an eco-friendly corrosion inhibitor on the mild steel in 1 M HCl solution

“…Corrosion parameters obtained from the curves have been given in Table V. The data show that with increasing temperature, the protective effect of the plantain extract on the metal surface decreases, which can be deduced that the extract is physically adsorbed (Fateh et al , 2017; Gaballah et al , 2017; Hamdou et al , 2017). The corrosion current density in the absence and presence of the inhibitor at different temperatures was calculated using equation (1).…”

Evaluation of Electrochemical and Anticorrosion Properties of Polyaniline-Fly Ash Nanocomposite

“…where λ is the wavelength of X-ray, d is the particle size in diameter, β is the FWHM of the surface plane pattern [10], and θ is the diffraction angle. The average mean crystallite size was deduced to be 15 nm.…”