The Journal of Adhesion · 1989 · 21 citations · 4 references
Natural SciencesMaterials EngineeringMaterials ScienceBiomaterialsStructural MaterialsSurface ScienceAdhesive BondingAdhesive Bonding For Indirect RestorationsAdhesive MaterialsAdhesivenessBond DurabilityDurability Of Adhesive BondsInterfacial AreaLap Shear StrengthPhysical PropertiesTitanium Materials
Abstract Factors influencing the durability of Ti-6Al-4V/epoxy interphases were studied by determining chemical and physical properties of Ti-6Al-4V adherend surfaces and by characterizing the strength and durability of Ti-6Al-4V/epoxy bonds. Ti-6Al-4V adherend surfaces were oxidized either by chemical etch or anodization. Four principal pretreatments were studied: chromic acid anodization (CAA), sodium hydroxide anodization (SHA), phosphate fluoride acid etch (P/F) and TURCO basic etch (TURCO). The oxides were characterized by SEM, STEM, profilometry, contact angles and XPS. All adhesive bonding was carried out using a structural epoxy, FM-300U. Both lap shear and wedge test samples were tested in hot, wet environments. The results lead to the conclusion that the interfacial area between the adhesive and adherend is the primary factor affecting bond durability.
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