Physicochemical interactions between amorphous metal oxide and polymer in metal–polymer hybrid materials

Li, Shuangshuang; Wan, Hailang; Lin, Jianping; Min, Junying

doi:10.1016/j.matdes.2023.111993

Cited by 9 publications

(1 citation statement)

References 54 publications

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“…The decreasing trend of SLS strengths with increasing rank of the laser parameter set is continuous for the metal-polymer joints and shows no large drop from one set to the other as is the case between R17 and R18 for the metal-CFRP specimens (Figure 10). Since the chemistry of the polymer matrix and the chemistry of the amorphous metal oxide films generated by the same laser pretreatments are generally identical (covalent and ionic bonds as well as physiochemical interactions [27]) for the metal-polymer and the metal-CFRP hybrid joints, these differences cannot simply be attributed to a qualitative change in the chemical bonding or the interlocking contribution with undercuts. This further emphasizes the importance of the surface enlargement along with the crater depth and the presence of undercut structures for high-strength, agingresistant hybrid joints.…”

Section: Discussionmentioning

confidence: 99%

Transferability of the Structure–Property Relationships from Laser-Pretreated Metal–Polymer Joints to Aluminum–CFRP Hybrid Joints

Freund,

Lützenkirchen,

Löbbecke

et al. 2023

J. Compos. Sci.

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The transferability of structure–property relationships for laser-pretreated metal adhesive joints to laser-pretreated metal–carbon-fiber-reinforced plastic (CFRP) bonds was investigated. Single-lap shear tests were performed on hybrid AW 6082-T6–CFRP specimens pretreated with the same pulsed laser surface parameter sets on the metal surface as previously tested, AW 6082-T6–E320 metal adhesive joints. The fracture surfaces were characterized to determine the type of failure and elucidate differences and commonalities in the link between surface structures and single-lap shear strengths. Digital image analyses of the hybrid specimens’ fractured surfaces were used to quantify remaining CFRP fragments on the metallic joint side. The results indicate that high surface enlargements and the presence of undercut structures lead to single-lap shear strengths exceeding 40 MPa and 35 MPa for unaged and aged hybrid specimens, respectively. Whereas for the metal–polymer joints, the trend from high strength to weakly bonded specimens is largely continuous with the degree of surface structuring, hybrid metal–CFRP joints exhibit a drastic drop in joint performance after aging if the laser-generated surface structures are less pronounced with low surface enlargements and crater depths. Surface features and hydrothermal aging determine whether the specimens fail cohesively or adhesively.

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Section: Discussionmentioning

confidence: 99%