Influence of laser-generated surface micro-structuring on the intrinsically bonded hybrid system CFRP-EN AW 6082-T6 on its corrosion properties

Delp, Alexander; Freund, Jonathan B.; Wu, Shuyao; Scholz, Ronja; Löbbecke, Miriam; Haubrich, Jan; Tröster, Thomas; Walther, Frank

doi:10.1016/j.compstruct.2022.115238

Cited by 3 publications

(4 citation statements)

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“…When orientated in the longitudinal direction (the fiber's longitudinal axis is parallel to the specimen height), it is assumed that the higher conductivity of aluminum leads to the conduction of current via Al. As already stated in a previous publication [18], the OCP for EN AW-6082 ∪ CFRP is decreased compared to pure EN AW-6082, while the corrosion current density (y-axis shift, Figure 3) reaches a similar range. Comparable results for CFRP and EN AW-5754-O were observed by Li et al [6] under the influence of a more tions), the corrosion products are U-shaped with streamlined distribution around the corrosion pits.…”

Section: Discussionsupporting

confidence: 82%

“…Pure Al shows higher OCP, while icorr was within a comparable ran to the hybrid material. Lsv on CFRP shows distinct differences, as shown in [18]. Wh comparing the different production parameters between K-series and lp-series (compa Figure 3a,b), no remarkable differences were detectable.…”

Section: Linear Sweep Voltammetrymentioning

confidence: 86%

“…For linear-sweep voltammetry, a three-electrode setup in a customized PMMA cell, described in [18], and a Gamry Interface 1000 potentiostat (Gamry Instruments Inc., Warminster, PA, USA) with Ag/AgCl as reference inside of a Luggin capillary (RE-1CP, ALS Co., Ltd., Tokyo, Japan), with a constant potential of 45.3 mV against saturated calomel electrode (RE-2BP, ALS Co., Ltd., Tokyo, Japan; +0.242 V vs. standard hydrogen electrode [23]) was employed.…”

Section: Methodsmentioning

confidence: 99%

“…The enlarged surface roughness due to laser structuring enhances this effect by producing a larger surface area and material tips, which lead to a greater probability of direct fiber-metal contact. Therefore, it is necessary to characterize the corrosion behavior by means of short-term corrosion testing procedures, i.e., linear sweep voltammetry (lsv) [18,19], and long-term corrosion testing, i.e., corrosion exposure testing with a focus on laser structure. The corrosion reaction is triggered by the CFRP component, which itself usually remains undamaged, while the metal component dissolves [20].…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Interfacial Corrosion Behavior of Hybrid Laminate EN AW-6082 ∪ CFRP

Delp,

Wu,

Freund

et al. 2024

Materials

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The corrosion behavior of a hybrid laminate consisting of laser-structured aluminum EN AW-6082 ∪ carbon fiber-reinforced polymer was investigated. Specimens were corroded in aqueous NaCl electrolyte (0.1 mol/L) over a period of up to 31 days and characterized continuously by means of scanning electron and light microscopy, supplemented by energy dispersive X-ray spectroscopy. Comparative linear sweep voltammetry was employed on the first and seventh day of the corrosion experiment. The influence of different laser morphologies and production process parameters on corrosion behavior was compared. The corrosion reaction mainly arises from the aluminum component and shows distinct differences in long-term corrosion morphology between pure EN AW-6082 and the hybrid laminate. Compared to short-term investigations, a strong influence of galvanic corrosion on the interface is assumed. No distinct influences of different laser structuring and process parameters on the corrosion behavior were detected. Weight measurements suggest a continuous loss of mass attributed to the detachment of corrosion products.

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Section: Discussionsupporting

confidence: 82%

Section: Linear Sweep Voltammetrymentioning

confidence: 86%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characterization of Interfacial Corrosion Behavior of Hybrid Laminate EN AW-6082 ∪ CFRP

Delp,

Wu,

Freund

et al. 2024

Materials

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The effect of weak boundary layers on adhesion properties of laser pretreated aluminum alloy EN-AW 6082 surfaces

Irfan

Requena

Haubrich

2022

International Journal of Adhesion and Adhesives

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Development and validation of a test facility for bending corrosion fatigue of hybrid laminates

Delp,

Walther

2024

Materials Testing

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In this article, the development of MoBeMeG, a modular device for bending-corrosion-fatigue investigations and variable specimen geometry in corrosive media with galvanic isolation between the test chamber and the test system, is presented. The main application is the investigation of hybrid laminates with high potential for galvanic corrosion, e.g., aluminum ∪ carbon fiber–reinforced plastics, focusing on the description of failure mechanisms and failure evolution at the interface under the influence of bending-corrosion-fatigue loading. The anvil distances are adjustable for the application of varying specimen geometries while retaining the full functionality of the test chamber and securing a full flexible testing possibility without the necessity of new constructions. The test engineering development results in considerable time savings as well as unparalleled efficiency enhancement in terms of bending-corrosion-fatigue performance assessments.

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Influence of laser-generated surface micro-structuring on the intrinsically bonded hybrid system CFRP-EN AW 6082-T6 on its corrosion properties

Cited by 3 publications

References 28 publications

Characterization of Interfacial Corrosion Behavior of Hybrid Laminate EN AW-6082 ∪ CFRP

Characterization of Interfacial Corrosion Behavior of Hybrid Laminate EN AW-6082 ∪ CFRP

The effect of weak boundary layers on adhesion properties of laser pretreated aluminum alloy EN-AW 6082 surfaces

Development and validation of a test facility for bending corrosion fatigue of hybrid laminates

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