| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1524936 | Materials Chemistry and Physics | 2011 | 7 Pages |
Electrodeposition of SiC particles (technical powder) with nickel matrix in the presence of cesium ions (0–37.6 mM) was investigated. The influence of Cs+ concentration on cathodic polarization curves was determined in galvanostatic and potentiodynamic measurements. The presence of Cs+ in the solution enhanced in some extent adsorption of Ni2+ ions on SiC, but preferential cesium adsorption occurred simultaneously. The last phenomenon resulted in cesium incorporation in the composite coating. The particle content in the deposits (16–24 vol%) was governed by the amount of nickel ions adsorbed on SiC. Structure of the composite coatings was studied by microscopic observations. At highest Cs+ concentrations, incorporation of small SiC grains was inhibited. Microhardness of deposits (390–800 HV) was directly dependent on the SiC content in the coatings.
Research highlights► The papers describes electrodeposition of SiC particles with nickel matrix in the presence of cesium ions. ► Correlations among the Cs+ concentration in the bath, kinetics of the cathodic process, SiC content in the deposits as well as adsorption of Ni2+ ions on SiC were found. ► Microhardness of the Ni/SiC deposits was also determined.
