Effect of surface treatment methods on the interfacial behavior of fiber metal laminate based on WE43 magnesium alloy
Source abstract
Abstract
Abstract The surface treatment of the metal substrate has a significant effect on the adhesion between the metal sheet and fiber/epoxy prepreg. The effect of the surface treatment methods, including sandpaper abrasion, phosphating treatment, anodizing and plasma electrolytic oxidation (PEO), on the surface morphology, surface energy and shear strength of WE43 magnesium alloy was analyzed in this study. The surface roughness is noted to have a significant effect on the wettability of WE43 magnesium alloy. The roughness and surface energy of the phosphated WE43 magnesium alloy are observed to be the largest among the four surface treatment methods, and the corresponding values are 4.17 and 70.8 mJ/m2, respectively. The lap-shear tensile tests reveal that WE43 magnesium alloy treated by the PEO process possesses the highest shear strength. Overall, the shear strength of the samples after phosphating treatment, anodizing and PEO treatment is noted to improve by 46%, 61% and 116% respectively, as compared with the sample treated by sandpaper abrasion. The observed superior shear properties after PEO treatment have been attributed to the cylindrical pores conducive to the infiltration of the epoxy resin during the curing process, thus, enhancing the adhesion between WE43 magnesium alloy sheet and epoxy resin. Additionally, the shear fracture mechanism was also analyzed in detail.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Surface Modification and Superhydrophobicity · Mechanical Behavior of Composites · Fiber-reinforced polymer composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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