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Comparative characterization of the surface state of Ti-6Al-4V substrates in different pre-bonding conditions
- Source :
- Journal of Advanced Joining Processes, Vol 3, Iss, Pp 100058-(2021)
- Publication Year :
- 2021
- Publisher :
- Elsevier, 2021.
-
Abstract
- This paper deals with the interfacial adhesion properties of Ti-6Al-4V alloy substrates, prepared by using different treatment protocols selected on the basis of their different effectiveness, and bonded using a structural, high-strength epoxy adhesive. The alternative pre-bonding treatments were sodium hydroxide anodization and low-pressure-plasma treatment, the effects of which were compared to that of a base preparation via solvent degreasing of the substrates’ surface. The treated surfaces were joined according to standard protocols, and then tested for shear strength. The mechanical results were then correlated to surface characteristics of the substrates such as oxidation state and wettability. Parallel scanning Kelvin-probe measurements allowed us to focus our attention on the possible role of the electrical properties of the substrates. We observed that each treatment entails different behavior of the electrical potential of the surface, which correlates with the mechanical strength of the joints. The results suggest that an evaluation of the surface potential of titanium-alloy substrates might be a promising, indicative supplementary parameter for the evaluation of their pre-bonding surface conditions, allowing correlations with presence/absence of an oxide layer at the resin-substrate interface.
- Subjects :
- Materials science
Base (chemistry)
Alloy
Surface treatment
Oxide
Bonding mechanism analysis
engineering.material
chemistry.chemical_compound
Surface treatment, Titanium and alloys, Bonding mechanism analysis, Wettability, Surface oxidation, Scanning Kelvin probe microscopy
Shear strength
Chemical Engineering (miscellaneous)
Composite material
Materials of engineering and construction. Mechanics of materials
Engineering (miscellaneous)
chemistry.chemical_classification
Anodizing
Mechanical Engineering
Titanium and alloys
Surface oxidation
chemistry
Scanning Kelvin probe microscopy
Mechanics of Materials
TA401-492
Solvent degreasing
engineering
Wettability
Wetting
Layer (electronics)
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Journal of Advanced Joining Processes, Vol 3, Iss, Pp 100058-(2021)
- Accession number :
- edsair.doi.dedup.....3edca0f0783c06c32569c1b72d0c1278