Effects of surface treatment of aluminium alloy 1050 on the adhesion and anticorrosion properties of the epoxy coating
Source abstract
Abstract
Abstract The objective of this work is to investigate the effects of zirconium-based (Zr) conversion coating on the adhesion properties and corrosion resistance of an epoxy/polyamide coating applied on the aluminium alloy 1050 (AA1050). Field emission scanning electron microscope (FE-SEM), energy dispersive X-ray spectrum (EDS), atomic force microscope (AFM) and contact angle measuring device were employed in order to characterize the surface characteristics of the Zr treated AA1050 samples. The epoxy/polyamide coating was applied on the untreated and Zr treated samples. The epoxy coating adhesion to the aluminium substrate was evaluated by pull-off test before and after 30 days immersion in 3.5% w/w NaCl solution. In addition, the electrochemical impedance spectroscopy (EIS) and salt spray tests were employed to characterize the corrosion protection properties of the epoxy coating applied on the AA1050 samples. Results revealed that the surface treatment of AA1050 by zirconium conversion coating resulted in the increase of surface free energy and surface roughness. The dry and recovery (adhesion strength after 30 days immersion in the 3.5 wt% NaCl solution) adhesion strengths of the coatings applied on the Zr treated aluminium samples were greater than untreated sample. In addition, the adhesion loss of the coating applied on the Zr treated aluminium substrate was lower than other samples. Also, the results obtained from EIS and salt spray test clearly revealed that the Zr conversion coating could enhance the corrosion protective performance of the epoxy coating significantly.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Corrosion Behavior and Inhibition · Concrete Corrosion and Durability · Metal and Thin Film Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (43)
Show source-provided references
1. Vargel · 2004
2. Wernick · 2001 · vol. 1
3. Surface morphological changes of aluminium alloys in alkaline solution: effect of second phase material10.1016/S0010-938X(98)00188-7 ↗
4. A synergistic combination of tetraethylorthosilicate and multiphosphonic acid offers excellent corrosion protection to AA1100 aluminum alloy10.1016/j.apsusc.2013.02.131 ↗
5. Assessment of the surface reactivity of AA1050 aluminium alloy10.1002/sia.5271 ↗
6. Corrosion protection by organic coatings: electrochemical mechanism and novel methods of investigation10.1016/S0013-4686(00)00348-0 ↗
7. Studying the influence of nano-Al2O3 particles on the corrosion performance and hydrolytic degradation resistance of an epoxy/polyamide coating on AA-105010.1016/j.porgcoat.2014.04.017 ↗
8. Corrosion stability of epoxy coatings on aluminum pretreated by vinyltriethoxysilane10.1016/j.corsci.2008.04.018 ↗
9. The effect of a conversion layer and organic coating on the electrochemical behavior of 8006 and 8079 aluminum alloys10.1016/S0300-9440(01)00269-7 ↗
10. Determination of water uptake and diffusion of Cl− ion in epoxy primer on aluminum alloys in NaCl solution by electrochemical impedance spectroscopy10.1016/S0300-9440(03)00010-9 ↗
11. The corrosion of aluminium10.1002/jctb.5010110503 ↗
12. Effect of pre-treatment on the durability of epoxy-bonded AA6060 aluminium joints10.1016/j.ijadhadh.2003.07.002 ↗
13. Effect of surface pre-treatment on the adhesive strength of epoxy–aluminium joints10.1016/j.ijadhadh.2008.01.001 ↗
14. Pre-treatment of AA6060 aluminium alloy for adhesive bonding10.1016/S0143-7496(01)00049-5 ↗
15. S.M. Mirabedini, S.Moradian, Relationship between adhesive strength and surface energy, in: Sixth Iranian Seminar on Polymer Science and Technology (ISPST, 2003), 12–15 May 2003, Tehran, Iran.
16. Posner · 2013 · 21
17. Study of deoxidation of 2024-T3 with various acids10.1179/026708301101509728 ↗
18. Effect of preliminary treatment on the superficial morphology and corrosion behaviour of AA2024 aluminium alloy
19. Surface pretreatment by phosphate conversion coatings – a review
20. Corrosion resistance of cerium-based conversion coatings on alumina borate whisker reinforced AA6061 composite10.1016/j.apsusc.2007.04.085 ↗
21. Formation of a cerium based conversion coating on AA2024: relationship with the microstructure10.1016/S0257-8972(03)00743-6 ↗
22. An electrochemical and SEM study of the mechanism of formation, morphology, and composition of titanium or zirconium fluoride-based coatings10.1016/j.surfcoat.2004.10.139 ↗
23. Studies on chromium-free conversion coatings on aluminum
24. Preparation and properties of chrome-free colored Ti/Zr based conversion coating on aluminum alloy10.1016/j.apsusc.2011.12.045 ↗
25. In situ pH measurement during the formation of conversion coatings on an aluminum alloy (AA2024)10.1039/c3an00663h ↗
26. Formation of a zirconium-titanium based conversion layer on AA6060 aluminium10.1016/S0257-8972(01)01663-2 ↗
27. SKPFM and SEM study of the deposition mechanism of Zr/Ti based pre-treatment on AA 6016 aluminium alloy10.1016/j.surfcoat.2007.02.039 ↗
28. Formation and characterisation of Ti–Zr based conversion layers on AA6060 aluminium10.1016/j.surfcoat.2003.11.003 ↗
29. Formation of zirconium-based conversion coatings on aluminium and Al–Cu alloys10.1016/j.corsci.2012.08.031 ↗
30. S.Sharifi Golru, M.M., Attar, B.Ramezanzadeh, Morphological analysis and corrosion performance of zirconium based conversion coating on the aluminum alloy 1050, J Ind Eng Chem (2014) In Press.10.1016/j.jiec.2014.09.036 ↗
31. The role of hexafluorozirconate in the formation of chromate conversion coatings on aluminum alloys10.1016/j.electacta.2005.08.022 ↗
32. Vaca-Cortés E, Lorenzo MA, Jirsa JO, Wheat HG, Carrasquillo RL. Adhesion testing of epoxy coating. Center for Transportation Research Bureau of Engineering Research the University of Texas at Austin; 1998.
33. Influence of surface pretreatments on the corrosion protection of sol–gel coated AA2024-T3 aluminium alloy10.1002/sia.5216 ↗
34. A reformulation of the equation of state for interfacial tensions10.1016/0021-9797(90)90067-X ↗
35. An evaluation of the corrosion resistance and adhesion properties of an epoxy-nanocomposite on a hot-dip galvanized steel (HDG) treated by different kinds of conversion coatings10.1016/j.surfcoat.2011.04.001 ↗
36. Cathodic delamination and anticorrosion performance of an epoxy coating containing nano/micro-sized ZnO particles on Cr(III)-Co(II)/Cr(III)-Ni(II) posttreated steel samples10.5006/0841 ↗
37. Adhesion phenomena in bonded joints10.1016/j.ijadhadh.2012.04.007 ↗
38. Self-repairing vanadium–zirconium composite conversion coating for aluminum alloys10.1016/j.apsusc.2013.05.015 ↗
39. Characterisation of conversion layers on aluminium by means of electrochemical impedance spectroscopy10.1016/0013-4686(94)00312-O ↗
40. Electrochemical impedance spectroscopy (EIS) as a new tool for investigating methods of corrosion protection10.1016/0013-4686(90)80007-B ↗
41. Evaluation of localized corrosion phenomena with electrochemical impedance spectroscopy (EIS) and electrochemical noise analysis (ENA)10.4028/www.scientific.net/MSF.192-194.673 ↗
42. Another approach in analysis of paint coatings with EIS measurement: phase angle at high frequencies10.1016/j.corsci.2006.03.012 ↗
43. The evaluation of coating performance by the variations of phase angles in middle and high frequency domains of EIS10.1016/j.corsci.2008.08.049 ↗