In present work the nanocrystalline composite electrochemical coatings were prepared with nickel matrix and particles SiC. The nickel plating bath of low nickel ion concentration (0.75 M) containing brightening organic compound with surfactants and the dispersed particle (SiC) was used for electrodeposition of composite coatings. The structure the composite coatings was established using TEM. The content of particles in coatings was examined gravimetrically. The dependence of the SiC content in the composite coatings Ni-SiC from of the concentration and kind of the organic additives was investigated. The roughness of the coatings Ni-SiC was measured using tester TR 100. The microhardness of the deposited layers was measured using a Vickers method at a load of 0.01 and 0,05 kG. The sliding wear tests for
Ni-SiC coatings were made in air, without lubrication, using a technique based on the measuring system comprising a flat surface and a ball. On the basis of the wear traces and measurement of their diameter, the depth of the wear was calculated, which was the measure of wear resistance.
The results suggest that the effect used of the organic compounds was the development of the nanostructure of the nickel matrix. The wear resistance increased with the microhardness increase.

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