Dudkina V. Structure and properties of metal films, produced by electroplating with external laser radiation stimulation

Research object - physical mechanisms of managing nickel and zinc metal films in conditions of external laser-stimulated electroplating. Aim - to establish physical mechanisms in effecting of laser radiation on structure and properties of electroplating metal Ni and Zn films. Research methods - experimental research of phase composition and structure of Ni and Zn films was held with the help of X-ray structure analysis. Surface morphology, structure and ultimate composition of films cross-section was researched with the help of metallographic methods and raster electron microscopy. Physical properties of water solutions of electrolyte fluids were researched by spectrophotometric analysis and standard methods of viscosity and conductivity test of electrolyte fluids. Volt-ampere curve was received at galvanostatic and potentiostatic regimes. On the basis of research results of structure and physical properties of nickel and zinc metal films received at laser-stimulated electroplating regime, their connection with laser radiation parameters. Laser radiation application allows, depending on electroplating regime (galvanostatic or potentiostatic), to get both equilibrium structure and on the contrary non-equilibrium one. Tolerance limits of cathodic potentials of local laser-stimulated electroplating of nickel and zinc films were defined. Zinc local films production process has been patented that can be used to restore defects of protection cover and application of solder alloy microdoses on small-sized elements of board layout. The given technology of local laser-stimulated electroplating can be used for application of metal films on electric contacts saving metals at the same time. Field of application - plating shops.