Enhanced active/barrier corrosion protective properties of epoxy coatings containing eco-friendly green inorganic/organic hybrid pigments based on zinc cations/Ferula Asafoetida leaves

2020 ◽  
pp. 114584
Author(s):  
Seyyed Arash Haddadi ◽  
Saeed Ghaderi ◽  
Mohsen Sadeghi ◽  
Behzad Gorji ◽  
Farhad Ahmadijokani ◽  
...  
Keyword(s):  
Epoxy Coatings ◽  
Protective Properties ◽  
Organic Hybrid ◽  
Active Barrier ◽  
Zinc Cations ◽  
Ferula Asafoetida

Determination of the protective properties of electrodeposited organic epoxy coatings on aluminium and modified aluminium surfaces

2005 ◽  
Vol 47 (3) ◽  
pp. 823-834 ◽  
Author(s):  
Z.Ž. Lazarević ◽  
V.B. Mišković-Stanković ◽  
Z. Kačarević-Popović ◽  
D.M. Dražić
Keyword(s):  
Epoxy Coatings ◽  
Protective Properties

scholarly journals Electrochemical properties and thermal stability of epoxy coatings electrodeposited on aluminium and modified aluminium surfaces

2001 ◽  
Vol 66 (11-12) ◽  
pp. 871-880 ◽  
Author(s):  
Vesna Miskovic-Stankovic ◽  
Zorica Lazarevic ◽  
Zorica Kacarevic-Popovic
Keyword(s):  
Thermal Stability ◽  
Electrochemical Impedance ◽  
Corrosion Behaviour ◽  
Charge Transfer Resistance ◽  
Epoxy Coatings ◽  
Transfer Resistance ◽  
Protective Properties ◽  
Chemically Modified ◽  
Thermal Stability Of

The corrosion behaviour of epoxy coatings electrodeposited on aluminium, as well as on electrochemically and chemically modified aluminium were investigated during exposure to 3 % NaCl. Electrochemical impedance spectroscopy (EIS) and thermogravimetric analysis (TGA) were used for the determination of the protective properties of epoxy coatings on aluminium, anodized aluminium, phosphatized and chromatized-phosphatized aluminium. The protective properties of epoxy coatings on anodized and chromatized-phosphatized aluminium are significantly improved with respect to the same epoxy coatings on aluminium and phosphatized aluminium: higher values of the pore resitance and charge-transfer resistance, lower values of the coating capacitance, double-layer capacitance and relative permittivity (from EIS) smaller amount of absorbed water inside the coating (From TGA). On the other hand, the lower values of the ipdt temperature indicate a lower thermal stability of the epoxy coatings on anodized and chromatized-phosphatized aluminium.

scholarly journals Protective properties of epoxy coatings electrodeposited on steel electrochemically modified by Zn-Fe alloys

2004 ◽  
Vol 58 (10) ◽  
pp. 450-456
Author(s):  
Jelena Bajat ◽  
Vesna Miskovic-Stankovic ◽  
Zorica Kacarevic-Popovic
Keyword(s):  
Prolonged Exposure ◽  
Passive Layer ◽  
Epoxy Coating ◽  
Constant Voltage ◽  
Epoxy Coatings ◽  
Corrosion Stability ◽  
Protective Properties ◽  
Water Oxygen ◽  
Current Densities ◽  
Fe Alloys

Epoxy coatings were electrodeposited on steel and steel modified by Zn-Fe alloys using the constant voltage method. Zn-Fe alloys were electrodeposited on steel at different current densities. The effect of the Zn-Fe alloy on the corrosion behavior of the epoxy coating was interpreted in terms of the electrochemical and transport properties. It was shown that the best properties, i.e. the largest values of the pore resistance and the smallest values of the coating capacitance, a longer period of almost constant Rp and Cp values, and the smallest diffusion coefficient of water through the epoxy coating, as well as the smallest amount of water absorbed inside the epoxy coating, were found for epoxy coatings on steel modified by a Zn-Fe alloy deposited at 4 A dm-2. During prolonged exposure to 3% NaCl, this Zn-Fe alloy significantly improves the corrosion stability of the epoxy coating: almost unchanged values of Rp and Rct were observed, due to the formation of a pseudo-passive layer of corrosion products, which is a good barrier to the transport of water, oxygen and electrolyte ions.

Effect of a ketimine compound on the structurization and protective properties of epoxy coatings

2004 ◽  
Vol 40 (2) ◽  
pp. 247-251
Author(s):  
V. I. Pokhmurs’kyi ◽  
V. K. Piddubnyi ◽  
I. M. Zin’ ◽  
B. M. Lavryshyn ◽  
L. M. Bilyi
Keyword(s):  
Epoxy Coatings ◽  
Protective Properties
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