Codeposition of SiC Particles with Electrolytic Nickel

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Codeposition of SiC Particles with Electrolytic Nickel

Ni/SiC composite coatings were produced by electrodeposition from chloride-sulphate bath. The effect of SiC concentration on the percentage of embedded particles at two current densities (0.75 and 1.50 A·dm-2) was determined. SiC content in the nickel matrix was in the range of 13-23 vol%, but lower values were found for higher current density. Increased particles contents in the coatings practically did not change microhardness of deposits (approximately 300 HV), but it increased corrosion resistance. Morphology and particle distribution in the deposits was studied with optical and transmission electron microscopes. Specific surface charge of SiC particles as well as adsorption of Ni2+ions on the powder particles were also determined.

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Archives of Metallurgy and Materials

The Journal of Institute of Metallurgy and Materials Science and Commitee on Metallurgy of Polish Academy of Sciences

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