Abstract
A correlation has been found between the composition, structure, and corrosion resistance of electrolytic Co-W coatings (on the basis of voltammeter and impedance measurements at pH-6.0 in a chloride-sulfate model solution) deposited at various densities of direct current from citrate electrolyte with a high concentration of sodium tungstate with addition of boric acid at a temperature of 58°C. It is found that these coatings possess a high corrosion resistance that is only insignificantly inferior to that of electrolyte chromium coatings. We have determined the interval of current densities of electrodeposition in which corrosion resistance of the coatings is maximum.
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Original Russian Text © N.I. Tsyntsaru, S.S. Belevskii, G.F. Volodina, O.L. Bersirova, Yu.S. Yapontseva, V.S. Kublanovskii, A.I. Dikusar, 2007, published in Elektronnaya Obrabotka Materialov, 2007, No. 5, pp. 9–15.
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Tsyntsaru, N.I., Belevskii, S.S., Volodina, G.F. et al. Composition, structure, and corrosion properties of coatings of Co-W alloys electrodeposited under direct current. Surf. Engin. Appl.Electrochem. 43, 312–317 (2007). https://doi.org/10.3103/S106837550705002X
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DOI: https://doi.org/10.3103/S106837550705002X