Otwarty dostęp

Effect of addition of non-functionalized graphene oxide in a commercial epoxy resin used as coating

Jenaro Leocadio Varela Caselis
Jenaro Leocadio Varela Caselis
, 
Juana Deisy Santamaría Juárez
Juana Deisy Santamaría Juárez
, 
José Alberto Galicia Aguilar
José Alberto Galicia Aguilar
, 
María Fernanda Domínguez Alcalá
María Fernanda Domínguez Alcalá
, 
Efraín Rubio Rosas
Efraín Rubio Rosas
, 
José Carlos Mendoza Hernández
José Carlos Mendoza Hernández
 oraz 
Manuel Sánchez Cantú
Manuel Sánchez Cantú
   | 01 mar 2022
Materials Science-Poland's Cover Image
O artykule
Poprzedni artykuł
Następny artykuł
Zacytuj
Data publikacji: 01 mar 2022
Zakres stron: 467 - 477
Otrzymano: 18 wrz 2021
Przyjęty: 15 gru 2021
DOI: https://doi.org/10.2478/msp-2021-0039
Słowa kluczowe
© 2021 Jenaro Leocadio Varela Caselis et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1

SEM micrograph coatings’ surface of the EG0, EG01, EG05, EG1, and EG3 samples. SEM, scanning electron microscopy
SEM micrograph coatings’ surface of the EG0, EG01, EG05, EG1, and EG3 samples. SEM, scanning electron microscopy

Fig. 2

SEM micrographs of the surface coatings: (A) EG0, (B) EG01, (C) EG05, (D) EG1, and (E) EG3. SEM, scanning electron microscopy
SEM micrographs of the surface coatings: (A) EG0, (B) EG01, (C) EG05, (D) EG1, and (E) EG3. SEM, scanning electron microscopy

Fig. 3

FTIR spectra of the EG0, EG01, EG05, EG1, and EG3 samples; the epoxy absorption peaks are indicated in the spectra. FTIR, Fourier transform infrared spectroscopy
FTIR spectra of the EG0, EG01, EG05, EG1, and EG3 samples; the epoxy absorption peaks are indicated in the spectra. FTIR, Fourier transform infrared spectroscopy

Fig. 4

XRD diffractograms of the graphite, GO, EG0, EG01, EG05, EG1, and EG3 samples. GO, Graphene oxide; XRD, X-ray diffraction
XRD diffractograms of the graphite, GO, EG0, EG01, EG05, EG1, and EG3 samples. GO, Graphene oxide; XRD, X-ray diffraction

Fig. 5

EEC for the studied coating systems. CPE, Constant phase element
EEC for the studied coating systems. CPE, Constant phase element

Fig. 6

Bode diagrams of the EG0, EG01, EG05, EG1, and EG3 samples immersed in 5 wt.% NaCl solution. (A) Initial immersion; (B) After 150 h; (C) After 300 h; (D) After 500 h
Bode diagrams of the EG0, EG01, EG05, EG1, and EG3 samples immersed in 5 wt.% NaCl solution. (A) Initial immersion; (B) After 150 h; (C) After 300 h; (D) After 500 h

Fig. 7

Nyquist diagrams of the EG0, EG01, EG05, EG1, and EG3 samples immersed in 5 wt.% NaCl solution: (A) Initial immersion; (B) After 150 h; (C) After 300 h; (D) After 500 h; marker points and solid lines show the experimental and fitted data, respectively
Nyquist diagrams of the EG0, EG01, EG05, EG1, and EG3 samples immersed in 5 wt.% NaCl solution: (A) Initial immersion; (B) After 150 h; (C) After 300 h; (D) After 500 h; marker points and solid lines show the experimental and fitted data, respectively

Fig. 8

Photographs showing the surfaces of coated steel panels after the boundary corrosion test; EG0, EG01, EG05, EG1, and EG3 in 5% NaCl solution
Photographs showing the surfaces of coated steel panels after the boundary corrosion test; EG0, EG01, EG05, EG1, and EG3 in 5% NaCl solution

The electrochemical parameters extracted from EIS data for nanocomposite epoxy coatings containing 0 wt.%, 0.1 wt.%, 0.5 wt.%, 1 wt.%, and 3 wt.% GO after immersion in 5 wt.% NaCl solution for different durations

Sample time (hours) CPEC RP (Ω·cm2) CPEdl RCT (Ω·cm2) x2
Y0 (Ω−1·cm−2·sn) n Y0 (Ω−1·cm−2·sn) n
EG0 0 8.70E−10 9.77E−01 4.89E+10 7.11E−10 9.52E−01 1.45E+10 4.64E−04
150 2.32E−09 9.56E−01 9.80E+06 1.37E−07 4.00E−01 6.07E+08 2.42E−04
300 1.96E−09 9.15E−01 9.50E+06 7.44E−07 2.89E−01 2.36E+07 3.96E−04
500 5.79E−09 8.71E−01 321000 4.67E−06 5.61E−01 8.71E+05 2.59E−03
EG01 0 6.96E−10 9.66E−01 5.45E+10 2.92E−10 6.00E−01 1.49E+12 2.39E−03
150 1.80E−09 9.34E−01 8.24E+07 5.53E−09 8.40E−01 4.64E+08 4.40E−03
300 2.38E−09 9.51E−01 3.90E+07 1.77E−07 3.97E−01 1.12E+07 2.82E−04
500 4.46E−09 9.38E−01 431000 1.82E−06 2.63E−01 5.58E+08 9.06E−04
EG05 0 7.97E−10 9.82E−01 9.60E+10 1.72E−09 8.23E−01 5.30E+09 6.68E−04
150 9.28E−10 9.77E−01 8.73E+09 3.53E−10 4.35E−01 1.38E+12 3.56E−04
300 7.13E−10 9.69E−01 7.26E+09 8.56E−10 6.19E−01 1.27E+10 4.45E−04
500 9.13E−10 9.59E−01 4.70E+09 2.66E−11 1.80E−01 6.21E+07 1.08E−02
EG1 0 1.06E−09 9.70E−01 5.29E+09 1.34E−13 9.59E−01 6.32E+09 5.01E−03
150 2.97E−09 8.99E−01 3.94E+06 1.62E−07 6.20E−01 2.96E+10 8.81E−02
300 3.14E−09 8.96E−01 1.54E+07 2.36E−06 4.46E−01 5.84E+06 7.93E−04
500 7.05E−09 9.57E−01 138000 3.62E−06 4.12E−01 4.11E+06 3.24E−04
EG3 0 2.41E−09 8.13E−01 3.16E+09 2.42E−09 9.23E−01 1.30E+09 2.31E−02
150 4.18E−09 9.19E−01 1.32E+06 3.35E−07 3.00E−01 3.38E+07 4.36E−04
300 1.50E−08 8.80E−01 22330 5.37E−06 7.99E−01 1.89E+05 1.56E−03
500 2.48E−08 8.54E−01 2270 2.81E−05 7.46E−01 2.22E+04 1.91E−03
eISSN:
2083-134X
Język:
Angielski
Częstotliwość wydawania:
4 razy w roku
Dziedziny czasopisma:
Materials Sciences, other, Nanomaterials, Functional and Smart Materials, Materials Characterization and Properties
Kanał RSS czasopisma