ELECTROCHEMICAL OBTAINING OF ALLOY COATINGS ZN-FE-P FROM SULFATE ELECTROLYTES
Vasil D. Bachvarov, Miglena T. Peshova, Stefana. D. Vitkova, Nikolai S. Boshkov
Strony: 481-497
Opublikowano: 1 Jan 2010
Wyświetlenia: 97
Streszczenie: The present work investigates the galvanostatic obtaining of alloy coatings Zn-Fe-P from sulfate electrolytes. Cyclic voltaamogramms show that the co-deposition of zinc with phosphorus is possible only in the presence of iron ions in the electrolytic bath. The including of P in the coating occurs at iron amounts higher than 9 wt% - higher iron concentration leads to higher phosphorus amounts. Fine crystal surface structure with spherical agglomerates characteristic for the amorphous layers is obtained even of 0,5 - 2 wt% phosphorus. Entirely amorphous and uniform coatings can be practically obtained only at very thin films. Potentiodynamic curves in 1N Na2SO4 show that Zn-Fe-P alloy containing up to 2 wt% P and 20 wt% Fe demonstrate better corrosion characteristics compared to Zn-Fe coatings.
Słowa kluczowe: electrodeposition, zn-fe-p alloys, cyclic voltammetry
Cytowanie artykułu: Vasil D. Bachvarov, Miglena T. Peshova, Stefana. D. Vitkova, Nikolai S. Boshkov. ELECTROCHEMICAL OBTAINING OF ALLOY COATINGS ZN-FE-P FROM SULFATE ELECTROLYTES. Journal of International Scientific Publications: Materials, Methods & Technologies 4, 481-497 (2010). https://www.scientific-publications.net/en/article/1003399/
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