Improvement in strength of the aluminium/epoxy bonding joint by modification of the interphase

Phung, L.H.; Kleinert, Horst; Jansen, Irene; Häßler, R.; Jähne, E.

doi:10.1002/masy.200450639

Cited by 11 publications

(5 citation statements)

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“…With AAO coated titanium, the composition of the interface shows mixing between the two components,42 which might suggest a bond between AAO and titanium substrate which is less reliant on keying between the coating and the substrate roughness/porosity. It is worth noting that under certain conditions AAO coatings can be produced on aluminum substrates with shear strength of the interface in excess of 40 MPa 43…”

Section: Discussionmentioning

confidence: 99%

A novel nano‐porous alumina biomaterial with potential for loading with bioactive materials

Walpole

Xia

Wilson

et al. 2008

J Biomedical Materials Res

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Nano-porous alumina, with the potential for being loaded with bioactive materials, has been proposed as a novel material for coating implants. In this study, the shear strength of the interface between such nano-porous anodic aluminium oxide (AAO) coatings and titanium substrates, their biocompatibility, and their potential for pore loading have been investigated. An interface shear strength in excess of 29 MPa was obtained which is comparable with that of conventional plasma sprayed hydroxyapatite implant coatings. The viability and differentiation of MG63 osteoblastic cells co-cultured on the coating was found to be broadly comparable to that of similar cells co-cultured on conventional bioinert implant materials such as titanium and fully dense alumina. Extensive pore loading with silica nano-particles of different sizes and in different combinations was demonstrated throughout the thickness of AAO layers 1 microm and 60 microm thick. This work has demonstrated, that with suitable choice of pore filling materials, this novel coating might simultaneously combat infection, encourage bone regeneration, and secure fixation of the implant to bone.

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Section: Discussionmentioning

confidence: 99%

A novel nano‐porous alumina biomaterial with potential for loading with bioactive materials

Walpole

Xia

Wilson

et al. 2008

J Biomedical Materials Res

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“…Most of them use this technique for evaluating the curing of thermosets [8][9][10] as an alternative to differential scanning calorimetry. Influence of environmentally induced ageing [11,12] or specific parameters to bonding process, like surface pretreatment of substrates [13,14], is also investigated.…”

Section: Introductionmentioning

confidence: 99%

New bonded assembly configuration for dynamic mechanical analysis of adhesives

Caussé

Cortes

Dantras

et al. 2013

International Journal of Adhesion and Adhesives

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International audienceA new sample configuration has been developed in order to study molecular mobility of an adhesive in a bonded assembly configuration by dynamic mechanical analysis. The torsional rectangular mode is used to provide a shear solicitation all along the adherend/adhesive interface. The initial mechanical properties of each assembly's constituent are first investigated as reference. The modulus of aluminum foils used as substrates exhibits a classic elastic component and a slight viscous part due to microstructural changes or stress relaxation. Four relaxation modes are highlighted and identified for epoxy adhesive tested as a bulk material. Its viscoelastic behavior is compared to the one of adhesive tested in assembly configuration. The relaxation modes of the adhesive remain visible in spite of the sample stiffening by aluminum foils. Relaxation modes comparison shows that the temperature of loss modulus associated with the mechanical manifestation of glass transition slightly increases for the assembly configuration. Energy losses during this relaxation are much higher in the assembly configuration. Influence of rigid aluminum substrates is discussed in terms of the adhesively bonded joint solicitation mode

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“…1 The latter is the preferred oxide structure for adhesive bonding because of its mechanical stability and the highly porous layer structure. 7,8 Cleaning not only improves wetting but can also enhance the adhesive properties of the oxide layer. 6 Therefore, mostly wet (electro)chemical processes (etching, anodizing) are used.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the aluminum oxide properties for adhesive bonding by laser surface pretreatment

Rechner

Jansen

Beyer

2012

Journal of Laser Applications

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The laser pretreatment of AlMg3 has been conducted to investigate the influence of the fluence on the oxide properties. Therefore, the aluminum surface is pretreated by a fiber laser and subsequently analyzed by SEM, EDX, and XPS. Finally, mechanical measurements are performed on adhesively bonded specimens to study the surface properties produced. For the purpose of comparison, the two state-of-the-art pretreatment methods etching and phosphoric acid anodizing are also investigated. The results show that laser pretreatment changes the properties of the aluminum surface and especially those of the oxide layer. The latter grows in comparison to the natural oxide layer of etched surfaces but does not reach the dimensions of an electrochemically formed oxide layer. Mechanical testing showed that the laser treated specimens reach and exceed the strength values of etched and anodized surfaces, respectively. However, strength after aging does not keep up with the good long-term resistance of anodized aluminum, but it exceeds by far the values obtained for etched surfaces. Overall the study showed that optimizing the oxide layer by laser pretreatment leads to improved adhesion and enhances the strength of adhesively bonded aluminum. Therefore, the laser pretreatment of aluminum is an excellent alternative to wet (electro)chemical processes

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Improvement in strength of the aluminium/epoxy bonding joint by modification of the interphase

Cited by 11 publications

References 0 publications

A novel nano‐porous alumina biomaterial with potential for loading with bioactive materials

A novel nano‐porous alumina biomaterial with potential for loading with bioactive materials

New bonded assembly configuration for dynamic mechanical analysis of adhesives

Optimization of the aluminum oxide properties for adhesive bonding by laser surface pretreatment

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