Influence of Thermal Treatment on the Electrochemical Properties of Ni+W+Mo+Si Composite Coatings in an Alkaline Solution

Abstract:

The Ni+W+Mo+Si composite coatings were prepared by electrodeposition under the galvanostatic conditions (j_dep = -100 mA cm^-2) from the nickel bath containing powders of tungsten, molybdenum and silicon. Thermal treatment of the obtained coatings was conducted in argon atmosphere. Chemical composition of the coatings was determined by energy dispersive spectrocopy (EDS). Phase composition investigations were conducted by X-ray diffraction (XRD) method. Studies of electrochemical corrosion resistance were carried out in 5 M KOH solution. On the basis of these investigations it was found that Ni+W+Mo+Si thermally treated coating is more corrosion resistant than Ni+W+Mo+Si as-deposited coating.

• Periodical: Solid State Phenomena (Volume 228)
• Pages: 305-309
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.228.305
• Online since: March 2015
• Authors: Magdalena Popczyk*, Bożena Łosiewicz, Eugeniusz Łągiewka, A. Budniok
• Keywords: Corrosion Resistance, Ni+W+Mo+Si Composite Coatings, Thermal Treatment

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