Reaction Mechanism Analysis of Zn Electrodeposition Process in Acidic Sulphate Bath Using Potentiodynamic Polarization Technique

2019 ◽  
Keyword(s):  
Reaction Mechanism ◽  
Potentiodynamic Polarization ◽  
Mechanism Analysis ◽  
Electrodeposition Process ◽  
Polarization Technique ◽  
Sulphate Bath ◽  
Acidic Sulphate

Analysis and Calculation of Electrodeposition Process of Zn Alloy Coatings

2010 ◽  
Vol 139-141 ◽  
pp. 386-389
Author(s):  
Yun Ying Fan ◽  
Dong Hua Chen ◽  
Xiao Jing Liu
Keyword(s):  
Iron Content ◽  
Alloy Coating ◽  
Corrosion Performance ◽  
Electrodeposition Process ◽  
Real Concentration ◽  
Sulphate Bath ◽  
The Relationship ◽  
Zn Alloy ◽  
Acidic Sulphate ◽  
Ferrous Complex

Electrodeposited Zn-Fe alloy coating has good anti-corrosion performance and has been widely applied to protect steel materials from corrosion. In this paper, Zn-Fe alloy coatings were plated from acidic sulphate bath, and the relationship between real concentration of metallic complexes ([ZnL+] and [FeL+]) in the bath, which was calculated through solving nonlinear equations by METLAB software, and components of alloy coatings was studied. When ZnSO4•7H2O added in the bath increases from 10 g/L to 50 g/L, the ratio of ferrous complex to total complex decreases from 81.96% to 46.76%, simultaneously the iron content in Zn-Fe alloy coatings decreases from 26.82% to 6.32%. As FeSO4•7H2O and (NH4)2SO4 added in the bath increases from 40 g/L to 80 g/L respectively, the ratio of ferrous complex to total complex increases from 50.02% to 66.23% and from 58.65% to 60.37% respectively, simultaneously the iron content in coatings increases from 8.26% to 13.77% and from 9.28% to 11.92% respectively. The results show that variation of concentration of metallic complexes in the bath can lead to variation of components of coating proportionally.

Influence of Surfactant on Electrochemical Process for Zn-Electrodeposition

2014 ◽  
Vol 1081 ◽  
pp. 53-57
Author(s):  
Dao Bing Huang ◽  
Yuan Qiang Tu ◽  
Jie Cai ◽  
Guan Wen Feng ◽  
Xing Peng Guo
Keyword(s):  
Cyclic Voltammetry ◽  
Hydrogen Evolution ◽  
Reduction Potential ◽  
Steel Substrate ◽  
Electrochemical Process ◽  
Zinc Deposition ◽  
Sodium Dodecylbenzenesulfonate ◽  
Electrodeposition Process ◽  
Sulphate Bath ◽  
Acidic Sulphate

The electrodeposition of zinc from acidic sulphate bath on steel substrate has been studied. The influence of sodium dodecylbenzenesulfonate (SDBS) as surfactant on the mechanism of the electrodeposition process has been investigated using potentiodynamic and cyclic voltammetry (CV) techniques. From the analysis of CV analysis, it is shown that in the surfactant free bath solution, hydrogen evolution occurs together with the zinc deposition. The presence of SDBS shifts the reduction potential of Zn2+ to more negative values, indicating that SDBS to some extent hinder the Zn electrodeposition.

scholarly journals Plant multifunctional nuclease TBN1 with unexpected phospholipase activity: structural study and reaction-mechanism analysis. Corrigendum

2013 ◽  
Vol 69 (6) ◽  
pp. 1192-1192
Author(s):  
Tomáš Koval' ◽  
Petra Lipovová ◽  
Tomáš Podzimek ◽  
Jaroslav Matoušek ◽  
Jarmila Dušková ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Structural Study ◽  
Mechanism Analysis ◽  
Phospholipase Activity

Plant multifunctional nuclease TBN1 with unexpected phospholipase activity: structural study and reaction-mechanism analysis

2013 ◽  
Vol 69 (2) ◽  
pp. 213-226 ◽  
Author(s):  
Tomáš Koval' ◽  
Petra Lipovová ◽  
Tomáš Podzimek ◽  
Jaroslav Matoušek ◽  
Jarmila Dušková ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Structural Study ◽  
Mechanism Analysis ◽  
Phospholipase Activity

scholarly journals STUDY OF ELECTRODEPOSITION OF NICKEL FROM ALKALINE GLYCINE ELECTROLYTES

2021 ◽  
Vol 0 (4) ◽  
pp. 20-24
Author(s):  
N.R. Abıshova ◽  
◽  
G.S. Aliyev ◽  
U.M. Gurbanova ◽  
Y.A. Nuriyev ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Potentiodynamic Polarization ◽  
Concentration Polarization ◽  
Electrochemical Polarization ◽  
Potential Sweep ◽  
Nickel Ions ◽  
Electrodeposition Process ◽  
Potentiodynamic Polarization Curves ◽  
Main Components ◽  
Electrodeposition Of Nickel

The essay is about studies of the electrochemical reduction of nickel ions from a glycine electrolyte by the method of recording cyclic and linear potentiodynamic polarization curves. The effect of the concentration of the main components, potential sweep and temperature on the electrodeposition process of nickel has been studied. It has been found that at the beginning of the process the electrodeposition of the nickel ions from glycine electrolyte is controlled by electrochemical polarization, which turns into concentration polarization

Chemical Mechanical Polishing of Cu Pattern Wafer Based Alkaline Slurry in GLSI with R(NH2)n as Complexing Agent

2011 ◽  
Vol 236-238 ◽  
pp. 3020-3023 ◽  
Author(s):  
Yan Gang He ◽  
Xiao Wei Gan ◽  
Wei Hong ◽  
Yi Hu ◽  
Yu Ling Liu
Keyword(s):  
Reaction Mechanism ◽  
Chemical Mechanical Polishing ◽  
Mechanical Polishing ◽  
Complexing Agents ◽  
Complexing Agent ◽  
Mechanism Analysis ◽  
Slurry Stability ◽  
Cu Cmp ◽  
Better Than

Chemical mechanical polishing (CMP) of Cu pattern wafer based alkaline slurry in GLSI with R(NH2)n as complexing agent was investigated. In Cu CMP procedure, it is necessary to minimize the surface dishing and erosion while maintaining good planarity. This requirements are met through the complexing agents. Based on the reaction mechanism analysis of Cu in alkaline slurry with R(NH2)n as complexing agent in CMP, the performance of Cu dishing and erosion were discussed. The results showed that the slurry stability can be improved obviously by the addition of R(NH2)n as complexing agent, both Cu1 and Cu2 have good dishing and erosion performance. Furthermore, the dishing condition of Cu2 (180-230nm) is better than that of Cu1 (280-370nm), and the erosion condition of Cu2 (230-260nm) is also better than that of Cu1 (450-500nm).

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