Influence of anodizing surface treatment on the aging behavior in salt-fog environment of aluminum alloy 5083 to fiber reinforced composites adhesive joints

Franco, Francesco Di; Fiore, Vincenzo; Miranda, R.; Badagliacco, Dionisio; Santamaria, Monica; Valenza, A.

doi:10.1080/00218464.2021.2011240

Cited by 6 publications

(2 citation statements)

References 41 publications

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“…However, this method often involves the use of environmentally hazardous acidic and alkaline solutions. Moreover, the ASTM standard guide prescribes only a degreasing process for steel, which results in inferior bonding durability when compared to anodized metal substrates, such as aluminum (Al) and titanium (Ti). , Consequently, the molecular modification of adhesives to enhance their aging performance with steel surfaces emerges as a more universally applicable and efficient strategy . Catechol analogues, capable of forming cation–π, − multiple hydrogen bonds, π–π bonds, covalent bonds, and coordination bonds , with the metallic or polymeric substrates, demonstrate robust adsorption on ship hulls, even in turbulent and dynamic environments .…”

Section: Introductionmentioning

confidence: 99%

Interfacial Study of Steel Joints Prepared with a Catechol-Modified Epoxy Adhesive with Enhanced Bonding Performance and Durability

Li,

Wu,

Zhang

et al. 2024

Langmuir

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Bonding is widely used in aircraft and vehicles due to its light weight and simple process, but its strength decreases sharply in hot and humid environments. Anodization treatment, used for enhancing aging performance, is environmentally harmful and unsuitable for steel. In this study, a catechol-modified epoxy adhesive (CMEA) was prepared on a hectogram scale. Comparative analysis with phenol-modified epoxy adhesive (PMEA) and pristine epoxy adhesive (EA) revealed that the underwater bonding of CMEA (13.0 MPa) on stainless steel (SS) significantly outperformed the two control groups. Moreover, after 32 days of hydrothermal aging at 50 °C, CMEA preserved 73.9% of its initial bonding strength, while PMEA and EA retained 59.8 and 11.4%, respectively. Furthermore, X-ray photoelectron spectroscopy (XPS) etching at different times to analyze the interface between adhesives and the SS substrate indicated a marked increase in the O−H/ O 2− value at the interface between CMEA and the SS substrate compared to the two control groups. The above results demonstrated that the catechol-modified adhesive enhanced the bonding and aging properties of the adhesive, possibly due to the formation of a higher density of hydroxyl groups at the interface between the adhesive and the SS substrate. These findings contribute to the understanding of the enhancement mechanism of catechol in improving the bonding and aging properties of adhesives and suggest a feasible direction for designing adhesives with high bonding strength and high durability.

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Section: Introductionmentioning

confidence: 99%

Interfacial Study of Steel Joints Prepared with a Catechol-Modified Epoxy Adhesive with Enhanced Bonding Performance and Durability

Li,

Wu,

Zhang

et al. 2024

Langmuir

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“…It was concluded that the strength of the joint decreases with increasing aging time and failure moves from cohesive in the adhesive to interfacial at the adhesive/aluminum interface, moving again to the adhesive when aging time further increases. Franco et al [ 39 ] analyzed the effect of surface preparation and concluded that when the aluminum is anodized using a tartaric–sulfuric acid-based process, the strength of the interface is maintained for longer immersion times, when compared to mechanical abrasion.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Interface/Interphase on the Water Ingress Properties of Joints with PBT-GF30 and Aluminum Substrates Using Silicone Adhesive

et al. 2023

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The aim of this work is to analyze the difference between silicone/composite and silicone/metal interphases, both in terms of water diffusion behavior and failure of the aged joints. For that, silicone joints with two different suhbstrates were prepared. The substrates were polybutylene terephthalate with 30% of short glass fiber (PBT-GF30) and 6082-T6 aluminum. It is assumed that the water uptake of the joints is equal to the water uptake of the substrate, adhesive, and interphase. Therefore, knowing the first three, the last could be isolated. To study the water diffusion behavior of the complete joint, rectangular joints were prepared, immersed in water and their water uptake was measured. The water immersion was conducted at 70∘C. It was concluded that the aluminum/silicone joints absorbed more water through the interphase region than the PBT-GF30/silicone joints, since the difference between the expected water uptake and the experimentally measured mass gain is significantly higher, causing adhesive failure of the joint. The same was not observed in the PBT-GF30/silicone, with a more stable interphase, that does not absorb measurable quantities of water and always exhibits cohesive failure.

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Adhesively bonded joints – A review on design, manufacturing, experiments, modeling and challenges

Wei,

Jin,

Luo

et al. 2024

Composites Part B: Engineering

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Influence of anodizing surface treatment on the aging behavior in salt-fog environment of aluminum alloy 5083 to fiber reinforced composites adhesive joints

Cited by 6 publications

References 41 publications

Interfacial Study of Steel Joints Prepared with a Catechol-Modified Epoxy Adhesive with Enhanced Bonding Performance and Durability

Interfacial Study of Steel Joints Prepared with a Catechol-Modified Epoxy Adhesive with Enhanced Bonding Performance and Durability

Effect of the Interface/Interphase on the Water Ingress Properties of Joints with PBT-GF30 and Aluminum Substrates Using Silicone Adhesive

Adhesively bonded joints – A review on design, manufacturing, experiments, modeling and challenges

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