Anticorrosion performance of Zn-Al-Gr/waterborne epoxy composite coatings on mild steel

This study investigated the corrosion resistance of graphene/waterborne epoxy composite coatings in CO 2 -satarated NaCl solution. The coatings were prepared by dispersing graphene in waterborne epoxy with the addition of carboxymethylcellulose sodium. The structure and composition of the coatings were characterized by scanning electron microscopy, transmission electron microscopy, Fourier-transform infrared and Raman spectroscopies. The corrosion resistance of the composite coatings was investigated by potentiodynamic polarization measurements and electrochemical impedance spectroscopy. Composite coatings with more uniform surfaces and far fewer defects than blank waterborne epoxy coatings were obtained on 1020 steel. The 0.5 wt% graphene/waterborne epoxy composite coating exhibited a much lower corrosion rate and provided better water resistance properties and long-term protection than those of the blank epoxy coating in CO 2 -satarated NaCl solution.

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Comparative Anticorrosion Performance of Electrochemically Produced Zn–NiO and Zn–NiO–ZrO2 Composite Coatings on Mild Steel

Surface Engineering and Applied Electrochemistry ◽

10.3103/s1068375519030050 ◽

2019 ◽

Vol 55 (3) ◽

pp. 317-323

Author(s):

K. Deepa ◽

T. V. Venkatesha

Keyword(s):

Mild Steel ◽

Composite Coatings ◽

Anticorrosion Performance

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Epoxy\Epoxy Composite\Epoxy Hybrid Composite Coatings for Tribological Applications—A Review

Polymers ◽

10.3390/polym13020179 ◽

2021 ◽

Vol 13 (2) ◽

pp. 179

Author(s):

M. M. A. Baig ◽

M. Abdul Samad

Keyword(s):

Tribological Properties ◽

Hybrid Composite ◽

Review Paper ◽

Epoxy Composite ◽

Composite Coatings ◽

Load Bearing Capacity ◽

Corrosive Media ◽

Fluid Handling ◽

Low Load ◽

Made In

Epoxy composite coating systems generally find their usage in applications such as, fluid handling systems to protect components from corrosive media. However, their use in demanding tribological applications such as, in sliding components of machines, are known to be limited. This is often attributed to their low load bearing capacity combined with poor thermal stability under severe p-v regimes. Researchers have tried to enhance the tribological properties of the epoxy coatings using a combination of several types of micro/nano sized fillers to produce composite or hybrid composite coatings. Hence, this review paper aims to focus on the recent advances made in developing the epoxy coating systems. Special attention would be paid to the types and properties of nano-fillers that have been commonly used to develop these coatings, different dispersion techniques adopted and the effects that each of these fillers (and their combinations) have on the tribological properties of these coatings.

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Effect of coating composition on the anticorrosion performance of a silane sol–gel layer on mild steel

RSC Advances ◽

10.1039/c5ra21744j ◽

2015 ◽

Vol 5 (129) ◽

pp. 106485-106491 ◽

Cited By ~ 3

Author(s):

A. Foroozan E. ◽

R. Naderi

Keyword(s):

Mild Steel ◽

Electrochemical Impedance ◽

Steel Substrate ◽

Sol Gel ◽

Gel Layer ◽

Gel Film ◽

Coating Composition ◽

Anticorrosion Performance ◽

Protective Performance ◽

Mild Steel Substrate

In this study, the effect of coating composition on the protective performance of an eco-friendly silane sol–gel film applied on a mild steel substrate was investigated using electrochemical impedance spectroscopy and surface analysis methods.

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Performance of Hood System and Head Injury Criteria Subjected to Frontal Impacts

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.165.270 ◽

2012 ◽

Vol 165 ◽

pp. 270-274 ◽

Cited By ~ 2

Author(s):

J. Mai Nursherida ◽

Sahari B. Barkawi ◽

A.A. Nuraini ◽

Aidy Ali ◽

A.A. Faieza ◽

...

Keyword(s):

Head Injury ◽

Mild Steel ◽

Epoxy Composite ◽

Important Variable ◽

Plane Failure ◽

Head Injury Criterion ◽

Frontal Impacts ◽

Injury Criteria ◽

Head Injury Criteria ◽

Protective Performance

The aim of this study is to analyze the effect of steel and composite material on pedestrian head injury criteria of hood system. The hood is made of mild steel and aluminum, e-glass/epoxy composite and carbon epoxy composite are studied and characterized by impact modeling using LS-DYNA V971 in accordance with United States New Car Assessment Program (US-NCAP) frontal impact velocity and based on European Enhanced Vehicle-safety Committee. The most important variable of this structure are mass, material, internal energy, and Head Injury Criterion (HIC). The results are compared with hood made of mild steel. Three types of materials are used which consists of mild steel as reference materials, Aluminum AA5182, E-glass/epoxy composite and carbon fiber/epoxy composite with four different fiber configurations. The in-plane failure behaviors of the composites were evaluated by using Tsai Wu failure criterion. The results for the composite materials are compared to that of steel to find the best material with lowest HIC values. In order to evaluate the protective performance of the baseline hood, the Finite Element models of 50th percentile an adult pedestrian dummy is used in parallel to impact the hood. It was found that aluminum AA5182 hood can reduce the Head Injury Criterion (HIC) by comparing with the baseline hood. For pedestrian crash, it is observed that Aluminum AA5182 hood gave the lowest HIC value with 549.70 for HIC15 and 883.00 for HIC36 followed by steel hood with 657.40 for HIC15 and 980.90 for HIC36, e-glass/epoxy composite hood with 639.60 for HIC15 and 921.70 for HIC36 and carbon/epoxy composite hood with 1197.00 for HIC15 and 1424.00 for HIC36.

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