Bonding of Titanium Alloys |
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Authors: | K. W. Allen H. S. Alsalim W. C. Wake |
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Affiliation: | a The City University, London, England |
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Abstract: | Surface pretreatments affect joint strength, some improve it, e.g. etching in aqueous hydrofluoric acid or oxidation in alkaline hydrogen peroxide; while others decrease the strength e.g. etching in acids containing high concentrations of oxidising agents.
For Ti-6A1-4V alloy, best results are obtained by either etching in aqueous hydrofluoric acid or oxidation in alkaline hydrogen peroxide for about two hours.
The results indicate that a pretreatment which leaves a coherent TiO2-rutile layer, on a rough surface, form the strongest joints. Surface roughness is shown to enhance bond strength. |
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