화학공학소재연구정보센터
Journal of Electroanalytical Chemistry, Vol.441, No.1-2, 69-76, 1998
Qualitative and quantitative assessment of phases in electrodeposited Ni+Cd alloys by the ALSV technique
During the last decade the anodic linear sweep voltammetry technique (ALSV) has frequently been used for qualitative assessment of phases in electrodeposited alloys. In the case of the Ni + Cd alloy it is shown that, as well as the qualitative, the quantitative assessment of phases in electrodeposited alloys can also be achieved by taking into account all relevant parameters of alloy electrodeposition. This is practically the first attempt of successful application of the ALSV technique for this purpose. It is shown, by the comparison between the phase distribution obtained by the analysis of the ALSV results and the phase distribution corresponding to the phase diagram, that the phase distribution in electrodeposited alloys is slightly different from the one predicted by the phase diagram. The values of the standard chemical potentials of beta and gamma phases are also estimated. A high negative value for mu(0)(gamma) indicates a strong interaction between Cd and Ni in order to form this phase, which is in a good accordance with the fact that the gamma phase is present in the alloy at all alloy compositions.