Effectiveness of Epoxy Coating Modified with Yttrium Oxide Loaded with Imidazole on the Corrosion Protection of Steel

Abstract

The search for highly effective corrosion protection solutions to avoid degradation of the metallic parts is enabling the development of polymeric organic coatings. Of particular relevance, polymeric nanocomposite coatings, modified with corrosion inhibitors, have been developed to provide enhanced surface protection. In this work, yttrium oxide nanoparticles loaded with corrosion inhibitor (Imidazole), used as additives in the formulation of epoxy for coated on the steel substrate. The loading of Y2O3 with imidazole was confirmed by field emission scanning electron microscopy (FE-SEM) and Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and Brunauer–Emmett–Teller analysis. UV-Vis analysis demonstrated the pH-sensitive behavior of the imidazole that helps in self-release when necessary. Electrochemical impedance spectroscopy (EIS) of the coated samples revealed that the coating modified with Y2O3/IMD provides better corrosion protection compared to coatings containing only Y2O3. XPS analysis validated the presence of an imidazole protective film on the steel substrate that enhanced the corrosion resistance of the coated samples

Polymeric smart coatings containing modified capped halloysite nanotubes for corrosion protection of carbon steel

“…The peak at 285.2 eV is related to the C-H bond [63]. The peak at 286.6 eV relates to the C-O-C bonding, which corresponds to the bonding between epoxy molecules due to epoxy residue on steel substrate [56][57][58], or it can be of C-N bond aromatic ring The peak at 399.6 is associated with N-C = in the quinoline ring and is consistent with previous studies [63,64]. The XPS spectra of Fe 2p3/2 are deconvoluted into many peaks.…”

Multilayered LDH/Microcapsule Smart Epoxy Coating for Corrosion Protection

“…The XPS spectrum of C1s for LDH-EP and DL-EP, respectively, can be seen in Figure c,g. The C 1s peak was split into three different peaks, which are C–C, C–O, and C–N at binding energies of 284.8 286.4, and 288 eV, respectively, as shown in Figure c. , Moreover, the peak at a binding energy of 284.8 eV can be attributed to the C–C/C–H bond between the epoxy, which might remain on the surface of the steel substrate . On the other hand, the C1s peak in Figure g was split into four different peaks.…”

“…The C 1s peak was split into three different peaks, which are C–C, C–O, and C–N at binding energies of 284.8 286.4, and 288 eV, respectively, as shown in Figure 16 c. 68 , 69 Moreover, the peak at a binding energy of 284.8 eV can be attributed to the C–C/C–H bond between the epoxy, which might remain on the surface of the steel substrate. 70 On the other hand, the C1s peak in Figure 16 g was split into four different peaks. The binding energies of the first three peaks are the same as those in Figure 16 c, and the binding energy of the fourth peak was related to the C=O at 288.7 eV.…”

Review of Green Synthesis and Anticorrosion Applications for Yttrium Oxide Nanoparticles

“…This bonding is connected to the pH shift, which produces an insulating layer that shields the alloy from corrosion. After immersion testing in sodium chloride solution, XPS is used to check whether imidazole is present at the metal coating/coating interface 33 . Alviz and his team 34 investigated how to make coatings that would shield the P91 alloy from corrosion in an oxidizing industrial setting.…”