Improving the adhesion between epoxy coatings and aluminium substrates

Brand, Jeroen van den; Gils, Sake Van; Beentjes, P. C. J.; Terryn, Herman; Sivel, V. G. M.; Wit, J.H.W. de

doi:10.1016/j.porgcoat.2004.08.005

Cited by 90 publications

(53 citation statements)

References 44 publications

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“…It was already reported in the literature on AA1050 with epoxy [13] that boiling results in better adhesion as compared to some organic molecular pre-treatments. Also, boiled AA2024 with epoxy adhesive gave better results than without boiling.…”

Section: Adcbmentioning

confidence: 95%

“…[10] It is also possible to tailor the composition of the oxide at the surfaces by temperature or chemical pre-treatments. [11,12] Some studies have combined the analysis of the surface composition and mechanical tests with various pre-treatments [13,14] and used the theory of acid-base characteristics of both the substrate and several polymers on steel. [15] Delamination of coatings and their adhesion ability have also been studied using mechanical testing methods such as T-peel testing, [16,17] pull-off and tape tests [18] and cross-hatch test.…”

Section: Introductionmentioning

confidence: 99%

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The influence of pre‐treatments of aluminium alloys on bonding of PET coatings

Wit¹,

Özkanat²,

Mol³

et al. 2010

Surface & Interface Analysis

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Application of organic coatings on aluminium alloys is commonplace for corrosion protection. The adhesion of coatings is of great importance to the final protection properties. It is therefore necessary to understand on a molecular level the mechanisms with which a coating is able to bond. In this paper, we explore the possibilities of combining model molecules for a poly(ethylene terephthalate) (PET) type coating, di-methyl terephthalate (DMT), with differently pre-treated samples of AA1050 and AA5182 alloys. Bonding is studied by means of Fourier-transform infrared (FTIR) spectroscopy. Because the type of bonding gives a direction for adhesion of a coated system, we also test (macroscopically) the adhesion of PET coatings with a novel technique: asymmetrical double cantilever beam (ADCB). In this method, a thin knife is used as a wedge on the interface of the alloy and the polymer. The displacement of the crack front as measured from the knife's contact point with the coating is used as an input parameter to obtain the adhesion energy for various systems. We show that there is a relationship between the character of bonding of DMT molecules and adhesion energies of PET on both alloys after pre-treatments in alkali and acid and boiling in water.

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Section: Adcbmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

The influence of pre‐treatments of aluminium alloys on bonding of PET coatings

Wit¹,

Özkanat²,

Mol³

et al. 2010

Surface & Interface Analysis

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“…After that, an epoxy (Resolution Epikote 1001) adhesive was coated on the modified substrate. The PvPA-based system showed poor adhesion performance in the pull-off test compared to PEMah, because PvPA forms a weakly-cured epoxy/polymer interphase [24].…”

Section: Aminopropyl Phosphonate (App)mentioning

confidence: 96%

“…Surface morphology Scanning electron microscopy (SEM) [9,14,15] Atomic force microscopy (AFM) [8,15] Presence, composition and stability of layer X-ray photoelectron spectroscopy (XPS) [6][7][8]11,[16][17][18][19][20][21] Auger electron spectroscopy (AES) [22] Fourier-transform infrared spectroscopy (FTIR) [8,11,14,16,17,23,24] Time-of-flight secondary ion mass spectrometry (ToF-SIMS)…”

Section: Characterization Technique Literaturementioning

confidence: 99%

“…FTIR was applied to investigate the adsorption of the coating by detecting specific vibrational modes involving phosphorus bonds [8,11,14,16,17,23,24]. Table 3 contains a summary of frequencies of vibrational modes involving the phosphorus atom found in the literature for self-assembled organophosphorus monolayers on aluminum.…”

Section: Presence Composition and Stability Of Layermentioning

confidence: 99%

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Recent Development in Phosphonic Acid-Based Organic Coatings on Aluminum

2017

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Abstract:Research on corrosion protection of aluminum has intensified over the past decades due to environmental concerns regarding chromate-based conversion coatings and also the higher material performance requirements in automotive and aviation industries. Phosphonic acid-based organic and organic-inorganic coatings are increasingly investigated as potential replacements of toxic and inefficient surface treatments for aluminum. In this review, we have briefly summarized recent work (since 2000) on pretreatments or coatings based on various phosphonic acids for aluminum and its alloys. Surface characterization methods, the mechanism of bonding of phosphonic acids to aluminum surface, methods for accessing the corrosion behavior of the treated aluminum, and applications have been discussed. There is a clear trend to develop multifunctional phosphonic acids and to produce hybrid organic-inorganic coatings. In most cases, the phosphonic acids are either assembled as a monolayer on the aluminum or incorporated in a coating matrix on top of aluminum, which is either organic or organic-inorganic in nature. Increased corrosion protection has often been observed. However, much work is still needed in terms of their ecological impact and adaptation to the industrially-feasible process for possible commercial exploitation.

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Influence of the Surface and Heat Treatment on the Bond Strength of Galvanized Steel/Aluminum Composites Joined by Plastic Deformation

et al. 2016

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The influence of a chemical or mechanical surface modification followed by different post-heat treatments on the bond strength of galvanized steel/aluminum composites is studied. An incremental rolling process is used for joint formation based on plastic deformation. The morphology, the chemical state of the modified surfaces as well as the cross-section, and local potential distribution of the welded zone is characterized by different microscopic and spectroscopic methods. The stability of the joint is analyzed by a shear-force test in combination with microscopic failure analysis. A clear correlation between pre/post-treatment and the joint strength is observed. 1709/16-2, HO 2356/8-2, and MA 1175/36-2 as part of the ECUF project (SPP 1640 framework). Special thanks are due to N. Buitkamp (CMP) for supplying the FE-SEM measurements.

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Improving the adhesion between epoxy coatings and aluminium substrates

Cited by 90 publications

References 44 publications

The influence of pre‐treatments of aluminium alloys on bonding of PET coatings

The influence of pre‐treatments of aluminium alloys on bonding of PET coatings

Recent Development in Phosphonic Acid-Based Organic Coatings on Aluminum

Influence of the Surface and Heat Treatment on the Bond Strength of Galvanized Steel/Aluminum Composites Joined by Plastic Deformation

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