Study of the effect of electrolyte composition on adhesion and other properties of a coating-base system
| Autor: | M. V. Maksimov, V. V. Rogozhin, E. S. Belyaev, T. I. Devyatkina |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Industrial laboratory. Diagnostics of materials. 87:34-39 |
| ISSN: | 2588-0187 1028-6861 |
| DOI: | 10.26896/1028-6861-2021-87-10-34-39 |
| Popis: | Aluminum alloys with electroplated coatings and copper plated in particular gained multiple applications. However, pre-zincate treatment often fails to provide the desired adhesion of the coating. We present the results of studying the effect of the electrolyte composition on the adhesion and other properties of the coating-base system. It is shown that an electrolyte with a reduced content of sulfuric and phosphoric acids can be used for anodizing and the oxide films formed during anodizing are stable in the usual copper-plating sulfuric acid electrolyte which eliminates contact exchange and increases adhesion. The use of a modern scratch-test method provides numerical determination of the values of adhesion of copper coatings. The adhesion value depends on the surface porosity of the oxide film and on the type of anodized alloys. The results can be used to improve the technology of applying copper coatings, both as an independent coating and as an underlayer in multilayer coatings. |
| Databáze: | OpenAIRE |
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