To improve the strength of adhesive-bonded carbon fiber reinforced polymer (CFRP) joints, atmospheric pressure plasma treatment (APPT) was used to treat a CFRP substrate surface. This study investigated effects nozzle distance (i.e., between and substrate) speed moving relative APPT on lap-shear joints. Results show that plasma-treated joints increased peak value then decreased as increased, associated with peaked joint depends applied speed. The reaches up 31.6 MPa, compared 8.6 MPa...

Laser–induced amorphous metal oxide is increasingly applied to enhancing interfacial bonding in metal–polymer hybrid materials. This work aims explore physicochemical interactions between and polymer understand its mechanism from the micro–nano scale. Scanning electron microscopy X–ray photoelectron spectroscopy were used investigate properties of laser–induced aluminum oxides on alloy surfaces. A well–infiltrated layer incompletely oxidized at enhanced alloy–polymer interface was...

Superhydrophobic metallic surfaces exhibit superior self-cleaning and anti-corrosion properties, but facile pollution-free preparation of such remains a challenge. Herein, we propose an eco-friendly strategy by using ns-laser treatment followed simple hygrothermal (95%RH @ 80 °C), this is applicable to facilely preparing superhydrophobicity for various metals. Immediately after treatment, ultra-porous nano-fibers composed amorphous Al-Al2O3 mixture were produced, rendered aluminum surface...

Unique spindle microstructures with an apex angle of ∼20° bring the ability directional water collection to various biosystems (i.e., spider silk and cactus stem). This has great potential solve insufficient interfacial wetting for mechanical interlocking formation between polymers substrates. In this study, bioinspired were easily fabricated through deposition molten materials by a nanosecond laser overlap ratio 21% spots achieved superior commercial epoxy adhesive on aluminum Detailed...

Surface topography reconstruction is extensively used to address the issue of weak bonding at polymer-metal interface metal-composite hybrid structure, while enhancement from this approach seriously impaired by insufficient wetting. In study, wetting behavior polymer on aluminum surfaces with multiscale topographies was theoretically and experimentally investigated realize stable complete Geometric dimensions surface have a notable impact interfacial forces three-phase contact line...

Abstract Self-piercing riveting (SPR) has been widely used in automobile industry, and the strength prediction of SPR joints always attracts attention researchers. In this work, a method cross-tension was proposed on basis finite element (FE) simulation extreme gradient boosting decision tree (XGBoost) algorithm. An FE model process established to simulate plastic deformations rivet substrate materials verified terms cross-sectional dimensions joints. The residual mechanical field from...

Abstract Adhesive bonding has become one of the joining and sealing technologies for titanium bipolar plates in proton exchange membrane fuel cells. However, interface is prone to fracture due effect thermal-acidic environment inside cell, making it crucial ensure service stability interface. This study applied laser surface modification addressing this challenge, further investigated power overlap ratio on corrosion resistance under 80 °C 5 ppm fluoride ion. It found that with higher...

The epoxy adhesive-galvanized steel adhesive structure has been widely used in various industrial fields, but achieving high bonding strength and corrosion resistance is a challenge. This study examined the impact of surface oxides on interfacial performance two types galvanized with Zn–Al or Zn–Al–Mg coatings. Scanning electron microscopy X-ray photoelectron spectroscopy analysis showed that coating was covered by ZnO Al2O3, while MgO additionally found coating. Both coatings exhibited...

Superhydrophobic metallic surfaces exhibit superior self-cleaning and anti-corrosion properties, but facile pollution-free preparation of such remains a challenge. Herein, we propose an eco-friendly strategy by using ns-laser treatment followed simple hygrothermal (95%RH @ 80°C), this is applicable to facilely preparing superhydrophobicity for various metals. Immediately after treatment, ultra-porous nano-fibers composed amorphous Al-Al2O3 mixture were produced, rendered aluminum surface...