Nature of the adhesion bond between epoxy adhesive and titanium
| Autor: | A. Ya. Bashkarev, V. A. Sytov, V. V. Sytov, R. I. Mamalimov, V. I. Vettegren, I. P. Shcherbakov, A. V. Savitskii |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
chemistry.chemical_classification
Materials science Physics and Astronomy (miscellaneous) Alloy technology industry and agriculture Titanium alloy chemistry.chemical_element Epoxy engineering.material Coordination complex Diffusion layer chemistry visual_art engineering visual_art.visual_art_medium Molecule Adhesive Composite material Titanium |
| Zdroj: | Technical Physics. 60:246-251 |
| ISSN: | 1090-6525 1063-7842 |
| Popis: | The time dependence of the potential difference that appears between two VT6 titanium alloy plates separated by a mixture of epoxy resin with an epoxy hardener is studied. One of the plates is placed in epoxy resin until equilibrium is established, and the second plate is coated with an as-prepared mixture of epoxy resin and a hardener. It is found that the potential difference decreases in time because of charge transfer by Ti2+ ions through epoxy resin. Photoluminescence and infrared absorption spectra of epoxy adhesive on the VT6 alloy surface are recorded. Their analysis shows that the Ti2+ ions having penetrated into the as-prepared mixture of epoxy resin and a hardener interact with CN groups in adhesive molecules to form coordination compounds. As a result, a diffusion layer saturated with coordination compounds forms at the alloy/adhesive interface, which leads to an increase in the strength of the adhesive. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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