Electroplating of chromium coatings from Cr(III)-based electrolytes containing water soluble polymer

Данилов, Ф. И.; Protsenko, V. S.; Butyrina, T. E.; Васильева, Е. А.; Баскевич, А. С.

doi:10.1134/s0033173206060075

Cited by 27 publications

(13 citation statements)

References 3 publications

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“…The protective ability of chromium coatings with respect to the low-carbon steel was assessed in a Weiss SC/KWT salt spray chamber. The medium was a sodium chloride solution with the concentration of (50±5) g/dm 3 . The salt spray dispersion degree was 1-10 μm (95% of drops).…”

Section: Methodsmentioning

confidence: 99%

“…An alternative to Cr(VI)-based chromium-plating electrolytes can be electrolytes based on Cr(III) compounds. Such electrolytes have already been developed long enough and some of them are commercially suitable for application of protective-decorative chromium coatings [1][2][3][4][5][6]. Chromium deposits from such electrolytes also have pores, but the lesser corrosivity of Cr(III) solutions allows introducing into them various organic additives.…”

Section: Influence Of Water-soluble Monomers On the Corrosion Protectmentioning

confidence: 99%

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Influence of water-soluble monomers on the corrosion protection ability of chromium coatings obtained from Cr(III)-based solutions

2018

Int. J. Corros. Scale Inhib.

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The effect of water-soluble electropolymerizable monomer additives in Cr(III) sulfateoxalate electrolytes on the corrosion-electrochemical behavior of chromium coatings and their ability to protect the steel support is studied. The additives into the Cr(III) sulfateoxalate electrolytes were caprolactam, aniline, and acrylamide. The XPS technique showed that both the surface and bulk layers of chromium coatings obtained from electrolytes with additives contain products of chemical or electrochemical conversions of caprolactam, aniline, and acrylamide, including their polystructures. It is found that caprolactam and aniline produce a positive effect on the protective ability of chromium coatings, while the protective ability of chromium coatings in the presence of acrylamide decreases. These properties are determined primarily by a decrease in the number of defects in chromium coatings in case of caprolactam and aniline and an increase in the number of cracks in the deposits in case of acrylamide. According to the earlier studies, the corrosionelectrochemical behavior of chromium coatings from Cr(III) sulfate-oxalate electrolytes in 0.5 M H 2 SO 4 is determined primarily by the presence of the chromium carbide phase acting as a cathodic agent. The effect of additives on the anodic polarization curve in 0.5 M H 2 SO 4 is most probably determined not only by an increase or decrease in the porosity of chromium deposits, but also by incorporation of the additives and products of their electrochemical conversion that, according to the literature, can act as corrosion inhibitors.

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Section: Methodsmentioning

confidence: 99%

Section: Influence Of Water-soluble Monomers On the Corrosion Protectmentioning

confidence: 99%

Influence of water-soluble monomers on the corrosion protection ability of chromium coatings obtained from Cr(III)-based solutions

2018

Int. J. Corros. Scale Inhib.

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“…In the analysis of electroplating effluent treatment plant/process, the researchers [5,8,13,17,[28][29][30][31] have considered the optimization of characteristics of waste water and sludge of electroplating effluent treatment processes from the aspects of handling and disposal mechanism. This can be a time bound solution.…”

Section: Introductionmentioning

confidence: 99%

Structural modeling and analysis of an effluent treatment process for electroplating—A graph theoretic approach

Kumar¹,

Clement²,

Agrawal³

2010

Journal of Hazardous Materials

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“…Many investigations dealing with development of effective trivalent chromium baths have been carried out [1][2][3][4][5][6][7][8][9][10][11][12] . Unfortunately, the proposed baths are not always sufficiently stable.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Nanocrystalline Hard Chromium Coatings Using Eco‐Friendly Trivalent Chromium Bath

Protsenko

Gordiienko

Данилов

et al. 2011

Journal of Chemistry

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A new aqueous sulfate trivalent chromium bath is described. The chromium bath contains formic acid and carbamide as complexing agents. Chromium was deposited at a temperature of 30÷40oC and a cathode current density of 10÷25 A dm-2. The bath allows obtaining thick (up to several hundred micrometers) hard chromium coatings with nanocrystalline structure. The electrodeposition rate reaches 0.8÷0.9 µm min-1.

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Electroplating of chromium coatings from Cr(III)-based electrolytes containing water soluble polymer

Cited by 27 publications

References 3 publications

Influence of water-soluble monomers on the corrosion protection ability of chromium coatings obtained from Cr(III)-based solutions

Influence of water-soluble monomers on the corrosion protection ability of chromium coatings obtained from Cr(III)-based solutions

Structural modeling and analysis of an effluent treatment process for electroplating—A graph theoretic approach

Preparation and Characterization of Nanocrystalline Hard Chromium Coatings Using Eco‐Friendly Trivalent Chromium Bath

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