Electrodeposition of bismuth from a trilon B-sulfosalicylate bath

Electrodeposition of the bath containing cerium nitrate, Trilon B (disodium edetate Na 2 H 2 Edta) and sulfosalicylic acid H 3 SSA was investigated using different proportions of bath components. When H 3 SS A is added to the bath, the sediment becomes translucent and its current efficiency improves

Electrodeposition of ruthenium on a glassy carbon electrode (GCE) in nitrate solution was examined by cyclic voltammetry, chronoamperometry and scanning electron microscopy. The cyclic voltammogram shows the intersection between the cathode and the anode branch, which is a feature of deuteron formation on the GCE. Tantalum deposition on GCE is diffusion controlled reaction. According to the Scharifker-Hills model, Scharifker's equation and Heerman-Tarallo equation are used to analyze the current transients of tantalum electrodeposition. In the case of 1 and 5 mM Bi 3+, the nucleation and growth mechanism is independent of the precipitation potential and follows a three-dimensional (3D) progressive nucleation and growth model. However, in the case of Bi 3+ at 10 and 20 mM, deposition voltage dependence of nucleation and growth mechanism can be found. However, the critical dimension (Nc) of the kernel estimated using these two expressions is zero.

Electrodeposition of the bath containing cerium nitrate, Trilon B (disodium edetate Na 2 H 2 Edta) and sulfosalicylic acid H 3 SSA was investigated using different proportions of bath components. When H 3 SS A is added to the bath, the sediment becomes translucent and its current efficiency improves

The early stage of tantalum deposition was studied using the constant potential pulse method. Constant potential pulses are made from a potential of 290 mV to various formation potentials within the crucible nucleation and growth range. The shape of the resulting transient is typical for nucleation and growth of deposits on conductive surfaces. As the transient potential (Et) shifts to the cathode side, the current maximum value (jm) increases and the corresponding time maximum value (tm) decreases. The constant potential transitions are normalized according to the current maximum and maximum times and are compared with the theoretical curves of two- and three-dimensional nucleation and growth under diffusion control. By applying the applicable relationship to this nucleation model the following parameters were determined: cathode nucleation potential (ECN), nucleation rate (AN), diffusion coefficient (D) and growth site density (Ns) .