Open AccessElectrolytic alloying of iron-chromium during deposition of coatings from a sulfate-chloride electrolyte
Author(s) -
A.F. Sinelnikov,
E. V. Bomeshko,
N.I. Korneychuk,
A. S. Ianuta
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1159/1/012076
Subject(s) - electrolyte , electrolysis , chloride , alloy , inorganic chemistry , chromium , materials science , cathode , sulfate , metallurgy , indentation hardness , chemical engineering , chemistry , electrode , microstructure , engineering
The paper presents the results of studies of the process of electroreduction of alloy iron-chromium from a sulfate-chloride electrolyte, influence of electrolyte composition and electrolysis (acidity, electrolyte temperature and cathode current density) on the process kinetics, the output of the alloy current efficiency and physico-mechanical properties of the coatings (microhardness, morphology). There were determined such parameters as the optimal ratio of concentrations of electrolyte components – 150 g/l of iron chloride (2) and 50 g/l of chromium sulfate (3) and modes of electrical recovery of metals – current density 40 A/dm 2 ; the temperature of the electrolyte is 50°C, the acidity of the solution is 0.5 pH units, which contribute to obtaining a high-quality coating with high tribological characteristics. Assumptions are made about the mechanism of the alloy formation by electrolysis from a mixed electrolyte.