Anticorrosion and electromagnetic interference shielding behavior of candle soot‐based epoxy coating

Abstract

This article presents candle soot (CS) as anticorrosion coating material for mild steel (MS) in 3.5 wt % of NaCl solution using potentiodynamic polarization and electrochemical impedance spectroscopy. CS is easily available, low-cost material, and characterized by using X-Ray diffraction (XRD), Raman spectroscopy, UV-vis spectroscopy, Fourier-transform infrared (FTIR), and scanning electron microscopy (SEM). CS is superhydrobhobic in nature that helps to prevent corrosion by repelling water molecules from MS surface. The electrochemical results confirmed the prevention in corrosion process for MS using candle soot-epoxy (CS-EP) based anticorrosion coatings. The CS-based coatings displayed outstanding barrier properties in 3.5 wt % of NaCl solution in comparison to the neat EP coating. Different candle CS-EP coating combinations were tested that exhibited excellent corrosion inhibition performance with highest protection increased up to 98.45% at 0.2 wt % of CS. The surface morphological studies were used to analyze the MS surface conditions in absence and presence of CS-EP coating in 3.5 wt % of NaCl solution. CS-EP admixtures were also tested for their shielding effectiveness in the frequency range of 8.2-12.4 GHz and it has been found that on incorporation of 0.2 wt % of CS in EP resin total shielding effectiveness (SE T ) increased to −5.3 dB as compared to −0.33 dB for neat EP.

A Comprehensive Review on Photoacoustic-Based Devices for Biomedical Applications

“… Curves showing the wavelength at which maximum optical absorption occurs for each material. Adapted from [ 61 , 134 , 135 , 136 , 137 , 138 , 139 ]. …”

Hot-Corrosion and Particle Erosion Resistance of Co-Based Brazed Alloy Coatings

“…In many high-temperature applications, industrial components are exposed to different phenomena such as wear, corrosion, or oxidation. The cost of both wear and corrosion is believed to be a significant fraction of the national gross domestic products GDPs estimated from 3 to 5% and even reaching up to 10% in developing countries [1]. Although stainless steels and superalloys are known for their remarkable characteristics in such applications, they fail at covering some important aspects.…”

Fabrication of robust self‐cleaning superhydrophobic coating by deposition of polymer layer on candle soot surface

“…Recently, much attentions have been paid to improve the stability of CS deposited superhydrophobic surface in order to hold the deposited soot particles in the coated surface. The use of various binders or adhesives or cross‐linking agents can help to improve the drawback of CS deposited superhydrophobic surface and enhance the surface adhesion and binding of CS particles in the coating 30–33 . The materials such as paraffin wax, 28 polydimethysiloxane (PDMS), 30 epoxy resin, 33 and polyvinylidene fluoride (PVDF) 32 were used effectively to withhold the CS particles and enhancing the stability of the fabricated surface.…”

“…The use of various binders or adhesives or crosslinking agents can help to improve the drawback of CS deposited superhydrophobic surface and enhance the surface adhesion and binding of CS particles in the coating. [30][31][32][33] The materials such as paraffin wax, 28 polydimethysiloxane (PDMS), 30 epoxy resin, 33 and polyvinylidene fluoride (PVDF) 32 were used effectively to withhold the CS particles and enhancing the stability of the fabricated surface. Yuan et al 34 have deposited CS particles on low-density polyethylene (LDPE) plate which is covered with a glue layer by holding on the top of candle flame with a height of 2 cm.…”