Avoiding crevice corrosion by laser surface treatment |
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Authors: | MGS Ferreira R Li R Vilar |
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Affiliation: | Departamento de Engenharia Química, Instituto Superior Técnico, 1096 Lisboa Codex, Portugal |
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Abstract: | The present work shows that laser surface alloying of the creviced area on Al 7175-T7351 with chromium can avoid crevice corrosion. Corrosion takes places outside the crevice in conditions where the ratio of anodic area to cathodic area is favourable to minimize corrosion. As laser surface processing is adequate for treating small areas there is an enormous potential in this technology. |
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