Theoretical Analysis of Chroming Electrolytes and Properties of Chrome Coatings

• DOI: 10.4028/www.scientific.net/kem.836.142
• Publication Date: 2020-03-30T07:32:01Z
• Authors: Yu.A. Stekolnikov; S.D. Polischuk; D.G. Churilov; N.V. Byshov; S.N. Borychev; I.A. Uspeunskiy; I.A. Yukhin; I.S. Arapov
• Keywords: Deposition

According to the dynamic characteristics of electrochemical system, according V.F. Molchanov, it is possible optimize composition chroming electrolyte and predict properties chromium deposits depending on mode deposition transition time. The possibility using time for formation cathode surface colloid-dispersion film study chemical solution considered. can be optimized by position maxima minima polarization curves. An cell described as a system differential equation, form which determined its internal structure, varies with electrolysis conditions. are evaluated number factors: process, forcing, attenuation, quality factor. This approach used develop low-concentration organic additives. Analytical dependences yield current, micro hardness, roughness rate conditions obtained. Chroming non-stationary modes allows most effective influence structure physical-mechanical coatings. When changing parameters, coatings, obtain various functional coatings specified (adjustable hardness in thickness, porosity, stresses, corrosion resistance, wear roughness) from single electrolyte. use together makes increase current yield, covering dissipative ability electrolyte, rate, producibility environmental friendliness reduce hydrogenation. crystal violet additives has an increased output (up 28 %), extended range obtaining wear-resistant up 240 A / dm 2 , high 2.5 μm min, 100-300 kg mm reduced toxicity, decreased absorbed hydrogen level at 500-700 cm 3 per 100 grams chrome coating stresses 600-950 mm2.