THE INFLUENCE OF ZrO2/SILANE PRE-TREATMENT ON CORROSION RESISTANCE OF POWDER COATING

Nguyen Van Chi, Pham Trung San, To Thi Xuan Hang

Abstract


Carbon steel was treated by immersion in silane doped hexafluorozirconic acid solution. Treated surface was characterized by field emission scanning electron microscopy (FE-SEM) and electrochemical methods. The effect of ZrO2/silane pretreatment on the protective properties of powder coating was studied by adhesion measurement and electrochemical impedance spectroscopy (EIS). The obtained results showed that the morphology and electrochemical characteristics of ZrO2/silane film depend on solution pH. Surface morphology was uniform and compact at solution pH = 4. The best corrosion performance obtained with the film formed in solution with pH and immersion time of 4 and 4 mins, respectively. The ZrO2/silane pretreatment significantly improved adhesion and corrosion resistance of powder coating on carbon steel.

Keywords


pretreatment, silane doped hexafluorozirconic acid, adhesion, EIS

Full Text:

PDF

References


Cerezo J., Vandendael I., Posner R., Lill K., de Wit J. H. W., Mol J. M. C. and Terryn H. - Initiation and growth of modified Zr-based conversion coatings on multi-metal surfaces, Surface & Coatings Technology, 236 (2004) (2013) 284–289.

Ghanbari A. and Attar M. M., - Surface free energy characterization and adhesion performance of mild steel theated based on zirconium conversion coationg: A comparative study, Surface & Coatings Technology, 246 (2014) 26–33.

Tchoquessi Doidjo M. R., Belec L., Aragon E., Joliff Y., Lanarde L., - Influence of silane-based treatment on adherence and wet durability of fusion bonded epoxy/steel joints, Progress in Organic Coatings, 76 (12) (2013) 1765–1772.

Mohammadloo H. E., Sarabi A. A., Alvani A. A. S., Sameie H., and Salimi R., - Nano-ceramic hexafluorozirconic acid based conversion thin film: Surface characterization and electrochemical study, Surface & Coatings Technology, 206 (19–20) (2012) 4132–4139.

Asemani H. R., Ahmadi P., Sarabi A. A., and Eivaz Mohammadloo H., - Effect of zirconium conversion coating: Adhesion and anti-corrosion properties of epoxy organic coating containing zinc aluminum polyphosphate (ZAPP) pigment on carbon mild steel, Progress in Organic Coatings, 94 (2016) 18–27.

A. Ghanbari and M. M. Attar, - The effect of zirconium-based surface treatment on the cathodic disbonding resistance of epoxy coated mild steel, Applied Surface Science, 316 (1) (2014) 429–434.

van Ooij W. J., Zhu D., Stacy M., Seth A., Mugada T., Gandhi J., Puomi P., - Corrosion protection properties of organofunctional silanes - An overview, Tsinghua Science and Technology, 10 (6) (2005) 639–664.

Mohammadloo H. E., Sarabi A. A., Alvani A. A. S., Salimi R., and Sameie H., - The effect of solution temperature and pH on corrosion performance and morphology of nanoceramic-based conversion thin film, Materials and Corrosion, 64 (6) (2013) 535–543.

Mohammad Hosseini R., Sarabi A. A., Eivaz Mohammadloo H., and Sarayloo M., - The performance improvement of Zr conversion coating through Mn incorporation: With and without organic coating, Surface & Coatings Technology, 258 (2014) 437–446.

Pantoja M., Abenojar J., Martínez M. A., and Velasco F., - Silane pretreatment of electrogalvanized steels: Effect on adhesive properties, International Journal of Adhesion and Adhesives, 65 (2016) 54–62.

Montemor M. F., Simões A. M., Ferreira M. G. S., Williams B., and Edwards H., - Corrosion performance of organosilane based pre-treatments for coatings on galvanized steel, Progress in Organic Coatings, 38 (1) (2000) 17–26.

Trabelsi W., Triki E., Dhouibi L., Ferreira M. G. S., Zheludkevich M. L., and. Montemor M. F, - The use of pre-treatments based on doped silane solutions for improved corrosion resistance of galvanised steel substrates, Surface & Coatings Technology, 200 (14–15) (2006) 4240–4250.

Trabelsi W., Cecilio P., Ferreira M. G. S., Yasakau K., Zheludkevich M. L., and Montemor M. F., - Surface evaluation and electrochemical behavior of doped silane pretreatments on galvanized steel substrates, Progress in Organic Coatings, 59 (2007) 214–223.

Chi N. V., San P. T., Nhung L. T., Khoa T. A., Hoang N., Hien N. T. Hang T. T. X., - Fabrication of zirconium oxide/silane pretreatment film on steel surfaces for organic coatings, Vietnam Journal of Chemistry, 55 (3e12) (2017) 12–16 (in Vietnamese).

Chi N. V., San P. T., Nhung L. T., Khoa T. A., Hoang N., Hien N. T. Hang T. T. X.,- Investigation of the effect of immersion time and pH on the properties of nano size zirconium oxide coating on CT3 steel, Vietnam Journal of Chemical, 55 (3e12) (2017) 8–11 (in Vietnamese).

Brug G. J., Van den Eeden A. L. G., Sluyters-Rehbach M., and Sluyters J. H., - The analysis of eletrode impedances complicated by thepresence of a constant phase element, Journal of Electroanalytical Chemistry, 176 (1–2) (1984) 275–295.




DOI: https://doi.org/10.15625/2525-2518/56/3B/12741

Refbacks



Index: Google Scholar; Crossref; VCGate; Asean Citation Index

Published by Vietnam Academy of Science and Technology