EIS and ENM measurements for three different organic coatings on aluminum

Thu, Quy Le; Bierwagen, Gordon P.; Touzain, S.

doi:10.1016/s0300-9440(01)00171-0

Cited by 61 publications

(9 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in Figure 7, the addition of organoclay into the PU coating causes an increase in the pore resistance during the long period of immersion in 3.5 wt % NaCl solution. Higher values of R por mean higher corrosion protection and lower ion permeability through the coating 30. Among the nanocomposite samples, after 225 days of immersion, PU–MMT5 and PU–MMT7 showed the highest R por , so the PU–MMT5 and PU–MMT7 films had the highest anticorrosive protection on the metal surfaces.…”

Section: Resultsmentioning

confidence: 98%

Aliphatic polyurethane–montmorillonite nanocomposite coatings: Preparation, characterization, and anticorrosive properties

Ashhari

Sarabi

Kasiriha

et al. 2010

J of Applied Polymer Sci

View full text Add to dashboard Cite

Polyurethane (PU)-clay nanocomposite coatings were prepared by a sonication method. The stability and morphology of these coatings was characterized by turbidometry, X-ray diffraction, and transmission electron microscopy. The anticorrosive properties of these coatings were investigated by salt-spray and electrochemical impedance spectroscopy methods. According to the results, dispersed nanoclay layers in the matrix of the nanocomposite coating compositions led to superior anticorrosive characteristics compared to those of pure PU coatings. The best results were obtained with coatings containing about 5 wt % clay. The resistance of the coating containing 5% clay was about 9.002 GX after 225 days of immersion in a 3.5 wt % NaCl solution, whereas it was only 97 kX for the pure PU coating.

show abstract

Section: Resultsmentioning

confidence: 98%

Aliphatic polyurethane–montmorillonite nanocomposite coatings: Preparation, characterization, and anticorrosive properties

Ashhari

Sarabi

Kasiriha

et al. 2010

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…As the duration of the salt spray exposure increased, a drop in low frequency impedance was observed for both Fe 2 O 3 and Fe 2 O 3 /PPy coatings. The drop-in impedance in this case represents a decrease in protection offered by the coating to the corrosion (Le Thu et al, 2001). It represents the electrolyte ingress through the developed pores in the coating (Amirudin and Thieny, 1995).…”

Section: Resultsmentioning

confidence: 99%

Polypyrrole/Metal Oxides-Based Composites/Nanocomposites for Corrosion Protection

2020

View full text Add to dashboard Cite

Corrosion is of paramount interest to researchers all around the world owing to its disastrous impact on both the economy and people's safety. New strategies based on novel materials have been employed to mitigate corrosion. Conducting polymerbased nanocomposites are a class of materials which have shown promise for corrosion protection. This paper will focus on the specific case of the Conducting polymer-based nanocomposites for corrosion protection, and one important case will be discussed in detail. Corrosion protection offered by Polypyrrole (PPy)/Fe 2 O 3 based composite coating for cold rolled substrate is characterized in this paper by electrochemical impedance spectroscopy and open circuit potential measurements. It was found that PPy/Fe 2 O 3 based composite coating provides better corrosion performance after 40 days exposure to ASTM B117 salt fog test conditions. This improved performance was attributed to the increased surface area of PPy and passivating nature of the composite resulting from the redox activity provided by PPy.

show abstract

“…It has been frequently shown that the noise resistance conforms with the protection level afforded as measured by other well-established electrochemical techniques such as EIS [30][31][32][33][34] and DC techniques [35,36]. High sensitivity of ENM to the changes at the coating/metal interface and its ability to measure very high resistances, e.g.…”

mentioning

confidence: 85%

A critical review of electrochemical noise measurement as a tool for evaluation of organic coatings

Jamali

Mills

2016

Progress in Organic Coatings

View full text Add to dashboard Cite

The simplicity of measuring equipment and versatility of data analysis makes electrochemical noise measurement an ideal technique for acquiring electrochemical information about the corrosion behavior of a painted metal relatively quickly. Hence the method has great potential for use in the laboratory as well as in field situations. However, special care must be taken in choosing data acquisition parameters, reference electrodes and symmetry of electrodes in order to achieve reproducible measurements. These areas have been discussed in this review along with methods of data analysis, alternative electrode configurations for on-site measurements and novel applications of the technique. AbstractThe simplicity of measuring equipment and versatility of data analysis makes electrochemical

show abstract

EIS and ENM measurements for three different organic coatings on aluminum

Cited by 61 publications

References 23 publications

Aliphatic polyurethane–montmorillonite nanocomposite coatings: Preparation, characterization, and anticorrosive properties

Aliphatic polyurethane–montmorillonite nanocomposite coatings: Preparation, characterization, and anticorrosive properties

Polypyrrole/Metal Oxides-Based Composites/Nanocomposites for Corrosion Protection

A critical review of electrochemical noise measurement as a tool for evaluation of organic coatings

Contact Info

Product

Resources

About