A. V. Isaev, V. V. Isaev, V. I. Naumov, T. I. Devyatkina
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Abstract
The specific features of galvanic deposition of a tin–bismuth alloy from a sulfuric acid electrolyte and the influence of ultradispersed diamonds (UDDs) on the deposition kinetics are considered. The deposition kinetics is accompanied by diffusion hindrances that are caused, to a lower extent, by the delivery of discharged tin and bismuth ions to the cathode surface and, to a higher extent, by the diffusion of these ions through a dense adsorption film of hide glue on the cathode surface. Electrons sequentially add to tin(II) ions, and the rate-determining step is the addition of the first electron. The introduction of UDDs into the electrolyte accelerates the deposition of a tin–bismuth alloy and increases the scattering power of the electrolyte, which is related to the chemisorption of tin ions on the highly developed UDD surface.
期刊介绍：
Russian Metallurgy (Metally) publishes results of original experimental and theoretical research in the form of reviews and regular articles devoted to topical problems of metallurgy, physical metallurgy, and treatment of ferrous, nonferrous, rare, and other metals and alloys, intermetallic compounds, and metallic composite materials. The journal focuses on physicochemical properties of metallurgical materials (ores, slags, matters, and melts of metals and alloys); physicochemical processes (thermodynamics and kinetics of pyrometallurgical, hydrometallurgical, electrochemical, and other processes); theoretical metallurgy; metal forming; thermoplastic and thermochemical treatment; computation and experimental determination of phase diagrams and thermokinetic diagrams; mechanisms and kinetics of phase transitions in metallic materials; relations between the chemical composition, phase and structural states of materials and their physicochemical and service properties; interaction between metallic materials and external media; and effects of radiation on these materials.
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