Electrochemical Measurements of Electroless Nickel Coatings on Zincated Aluminium Substrates
| Autor: | B. D. Barker, Frank C. Walsh, S. Court |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
inorganic chemicals
Materials science 020209 energy Electroless nickel plating Metallurgy Metals and Alloys chemistry.chemical_element 02 engineering and technology Surfaces and Interfaces Condensed Matter Physics Surfaces Coatings and Films Corrosion Electroless nickel chemistry.chemical_compound Nickel chemistry Mechanics of Materials Sodium hydroxide Aluminium 0202 electrical engineering electronic engineering information engineering Porosity Zincate |
| Zdroj: | Transactions of the IMF. 78:157-162 |
| ISSN: | 1745-9192 0020-2967 |
| DOI: | 10.1080/00202967.2000.11871330 |
| Popis: | SUMMARYZincate pre-treatment of aluminium substrates and the effects of deposit thickness on the corrosion resistance of electroless nickel deposits on aluminium have been studied by electrochemical methods. The results show the importance of the controlled zincate pre-treatment step on the induction period for electroless nickel plating. The protective properties of the nickel deposit are evaluated, as a function of thickness, using linear polarisation resistance and zero resistance ammetry techniques. The corrosion resistance of the deposits, which is strongly related to their thickness, is compared to the results of porosity testing on steel substrates. An essentially non-porous deposit is obtained after a thickness of 5–10 microns has been deposited on aluminium substrates under the experimental conditions. |
| Databáze: | OpenAIRE |
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