Untitled

Skibina, L. M.; Kuznetsov, V. V.; Sukholentsev, E. A.

doi:10.1023/a:1010330222922

Cited by 6 publications

(3 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4): the electrode reaction occurs in the potential range of the adsorption of sulfate ions at the positively charged surface of a copper electrode. 1 Addition of MP ( c L = 1 × 10 -4 mol/l) to the electrolyte and an increase in its concentration changed both the rate and mechanism of the electrode process. The 1 The conclusion about the charge sign of the copper surface during electroreduction of copper ions was made from the ϕ -potential scale by comparing the potential of the current-polarized electrode with the zero point of copper, which is -0.26 V in acidified aqueous solutions [9].…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Electrodeposition of Copper-Containing Polymer Coatings from Sulfate Electrolytes Containing N-Methylpyrrolidone

et al. 2005

Self Cite

View full text Add to dashboard Cite

Codeposition of a metal with a monomer capable of electrochemical polymerization at the electrode gives coatings with physicomechanical characteristics that are superior to those for metals used alone [1,2]. NMethylpyrrolidone (MP), which tends to polymerize when an electric current is passed, is of undoubted interest for such purposes. Transformations of MP in solution and at the electrode surface in its codeposition with the metal have been studied in detail [3]. The goal of this study was to elucidate the effect of the MP concentration on the nature of species adsorbed and reduced at the cathode and the wear resistance of coatings formed by copper electrodeposition from aqueous sulfate electrolytes containing N-methylpyrrolidone. EXPERIMENTALTest electrolytes were 1.25 M CuSO 4 + 0.5 M H 2 SO 4 (steady-state electrolysis) or 0.01 M CuSO 4 + 0.5 M H 2 SO 4 (pulse measurements). The concentration of N-methylpyrrolidone in the electrolytes was varied from 0.0001 to 1.0 mol/l. The electrolytes were prepared from twice-distilled water and reagent-grade chemicals. All electrochemical measurements were carried out in an atmosphere of electrolytic hydrogen at 298 K in a three-electrode cell with separate cathodic and anodic compartments. Supporting electrolytes were preelectrolyzed to remove electrochemically active impurities. A silver-chloride reference electrode was used. The diffusion jump of the potential was eliminated by the Pleskov method. The transient time was estimated and calculated as described in [4]. The capacitance and resistance of a copper electrode (electrolytic copper wire press-fitted into Teflon, the wire face diameter 1 mm) was measured with the P-5021 ac bridge for an equivalent series circuit at a frequency of 1 kHz. The results were converted to a parallel circuit in a potential range from 0 to -0.8 V (SCE). Before use, the electrode was pickled in H 3 PO 4 (60 g/l) + HNO 3 (20 g/l) + CH 3 COOH (40 g/l) until it turned evenly rose, washed with water, and polished in CH 3 COOH + HNO 3 (1 : 1) to brightness. Then the electrode was negatively polarized in the supporting electrolyte (0.5 M H 2 SO 4 ) at a potential lower by 100 mV than . Electrolysis was carried out in a 100-cm 3 glass cell under potentiostatic conditions. The electrode was made of steel-45 and electrolytic copper. The electrodes were arranged coaxially. The surface areas of the cathode and the anode were 2 and 10 cm 2 , respectively. The specific wear was assessed by testing electrodes covered with 20-µ m coatings at a reciprocal wobbling bench. The test bench was developed from an NGF-10 milling machine at the Don State Technical University. Measurements were performed as described in [5]. Adhesion to the base metal was estimated by applying a net of scratches. RESULTS AND DISCUSSIONThe initial polarization of the copper cathode ∆ E ini = E i -E p (where E p and E i are the equilibrium potential and the potential of the energized electrode, respectively) was determined from potential vs. time oscillograms. The oscillograms show...

show abstract

Section: Resultsmentioning

confidence: 99%

“…

…”

mentioning

confidence: 99%

Electrodeposition of Copper-Containing Polymer Coatings from Sulfate Electrolytes Containing N-Methylpyrrolidone

et al. 2005

Self Cite

View full text Add to dashboard Cite

show abstract

“…Thus, addition of caprolactam into the copper plating [7][8][9], cadmium plating [10], and nickel plating [11] electrolytes noticeably affects the uniformity, morphology, and tribological behavior of coatings. Products of electrochemical conversion of polyaniline can successfully inhibit steel corrosion processes [12][13][14].…”

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.

View full text Add to dashboard Cite

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.

show abstract

The effect of the nature and structure of organic components of copper-plating sulfate bath on the electroplating kinetics, structure, and physicomechanical properties of coatings

Skibina

Burdina

Kuzharov

et al. 2014

Prot Met Phys Chem Surf

View full text Add to dashboard Cite

Untitled

Cited by 6 publications

References 1 publication

Electrodeposition of Copper-Containing Polymer Coatings from Sulfate Electrolytes Containing N-Methylpyrrolidone

Electrodeposition of Copper-Containing Polymer Coatings from Sulfate Electrolytes Containing N-Methylpyrrolidone

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

The effect of the nature and structure of organic components of copper-plating sulfate bath on the electroplating kinetics, structure, and physicomechanical properties of coatings

Contact Info

Product

Resources

About