NUMERICAL ANALYSIS OF MASS TRANSPORT AND SOLUTION PROPERTIES OF NICKEL ELECTRODEPOSITED IN SUPERCRITICAL CO2
High quality films with fine grains have been reported using the novel plating method which combines the merits of traditional electroplating method with supercritical CO2 techniques. In the plating system of supercritical CO2, the optimal model was developed by Econometrics Views (EViews) software according to the effects of working pressures and temperatures on the electric resistance in emulsion, and the diffusion transport model of nickel ions was established according to the micro-trench feature. Matrix Laboratory (MATLAB) software was applied to analyse the optimization and effects. The influences of the current densities and micro-trench depths on nickel ions distribution were discussed, and the experiment of nickel electrodepositing with non-ionic surfactant Tergitol TMN 10 was investigated. The results indicate that the system exists an optimum condition for nickel electrodepositing at 16.0128 MPa and 44.9685 , then the res istance of emulsion is pressure on the resistance of emulsion is more significant than that of working temperature. For an aspect ratio of 4, the nickel ions mass transport gradually approach a steady state with the depositing time increasing. The higher uniformity and smoother surface of nickel plated films can be obtained in supercritical CO2 at 10 MPa and 50 , the average Vickers hardness of nickel films is 701.2 Hv.
nickel electrodepositing CO2 supercritical fluid diffusion transport emulsion properties model
Xingxing Wang Weining Lei Weiqiao Liu Bo Jiang
College of Mechanical and Energy Engineering, Changzhou University, Changzhou 213016, Jiangsu Provin Research Institute of Materials Technology and Engineering, Jiangsu Teachers University of Technolog College of Mechanical and Energy Engineering, Changzhou University, Changzhou 213016, Jiangsu Provin
国际会议
北京
英文
455-460
2010-11-23（万方平台首次上网日期，不代表论文的发表时间）