Electrodeposition of Co–W coatings from boron gluconate electrolyte with a soluble tungsten anode

Белевский, С. С.; Bobanova, Zh. I.; Buravets, V. A.; Gotelyak, A. V.; Danil’chuk, V. V.; Силкин, С. А.; Дикусар, А. И.

doi:10.1134/s107042721609007x

Cited by 18 publications

(39 citation statements)

References 20 publications

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“…Co−W coatings with or without a nanocrytsalline structure can be adequately prepared using electrodeposition from citrate and gluconate baths [1][2][3][4][5][6][7][8][9][10]. The development of technologies for these coatings, however, encounters a number of difficulties and issues that have not yet been fully resolved.…”

Section: Introductionmentioning

confidence: 99%

“…The development of technologies for these coatings, however, encounters a number of difficulties and issues that have not yet been fully resolved. Concerning boron−gluconate baths, in which metal concentrations are relatively low, the bath's efficiency is an issue, since the content of metal components (cobalt and tungsten salts) in the plating solution drops rather quickly during electrolysis, which results in a decrease in the cathode current's efficiency and has a negative impact on the mechanical properties of the coatings deposited from the partially depleted plating solution [10][11][12]. Variation of the coating's microhardness with volume current density (VCD) is an important problem that has not yet been satisfactorily resolved.…”

Section: Introductionmentioning

confidence: 99%

“…Variation of the coating's microhardness with volume current density (VCD) is an important problem that has not yet been satisfactorily resolved. This is known as the macroscopic size effect in microhardness that was established for electrodeposition from citrate and boron−gluconate baths; it consists of the dependence of the coating's microhardness on the cathode area at a fixed current density [10,[12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…Actually, this is one of the main problems of electroplating technology in general [15]. The necessity to address this problem has been highlighted repeatedly, and certain technical solutions have been proposed [10,16].…”

Section: Introductionmentioning

confidence: 99%

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The Mechanical Properties and Rate of Electrodeposition of Co−W Alloys from a Boron−Gluconate Bath: Impact of Anodic Processes

et al. 2018

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The effects the anode material has on the rate of electrodeposition (current efficiency) and micro-hardness of CoW alloys deposited from a boron-gluconate bath are studied in a broad range of bath ages Q (A h/L). We use nonconsumable (platinum and graphite) and consumable (tungsten, cobalt-tungsten) anodes. With the cobalttungsten double anode, the total concentration of W and Co species in the bath is maintained constant during electrodeposition. We find that, as Q increases, the anodic processes have a significant impact on both the rate of deposition and microhardness of the prepared coatings. Departing from the mechanism of induced codeposition in which the first stage is the formation of an intermediate species of the metal component that induces codeposition (Co), here we propose a model that takes into account the effects associated with the anodic processes. In this model, along with reduction at the cathode to give an alloy, this metal component can undergo oxidation at the anode.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Mechanical Properties and Rate of Electrodeposition of Co−W Alloys from a Boron−Gluconate Bath: Impact of Anodic Processes

et al. 2018

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“…Thus, the precursor concentration can deplete very fast, leading to a decrease of mechanical performance and current efficiency of obtained 8 alloys [15,16]. In order to increase long-duration operation of the electrolytic bath for Co-W alloys deposition the concentration of precursors can be increased and soluble anodes can be used [2,16].…”

Section: Introductionmentioning

confidence: 99%

THE INFLUENCE OF GLUCONATE BATH PARAMETERS ON THE RATE OF ELECTRODEPOSITION AND MECHANICAL PROPERTIES OF Co–W COATINGS

Белевский

Bobanova

Buravets

et al. 2017

Proccedings of International Scientific Conference "BALTTRIB 2017"

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The given study overview the results obtained for Co-W alloys electrodeposited from gluconate bath. Namely, the influence of different parameters (the concentration of the bath components, pH, temperature, cathodic current density, volume current density, hydrodynamic conditions, insoluble and soluble anodes) on the rate of electrodeposition and microhardness of the coatings has been investigated. The given research determine the conditions ensuring high deposition rate, microhardness and bath efficiency. It was shown, that the deposition rate, tungsten content and microhardness reach the maximum values at pH 6.5, regardless on the concentration of bath components. Also, it was detected the macroscopic size effect of microhardness, which is linked to the fact that for a fixed cathodic current density microhardness depends on volume current density. In addition, different anodes (Pt, graphite, W and Co-W) were investigated to reveal the anode influence on reaching the maximum values of the current efficiency and microhardness.

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Input of Moldova in shaping modern electrochemical science and technology

Дикусар

Cuharuc

Цынцару

2023

J Solid State Electrochem

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Electrodeposition of Co–W coatings from boron gluconate electrolyte with a soluble tungsten anode

Cited by 18 publications

References 20 publications

The Mechanical Properties and Rate of Electrodeposition of Co−W Alloys from a Boron−Gluconate Bath: Impact of Anodic Processes

The Mechanical Properties and Rate of Electrodeposition of Co−W Alloys from a Boron−Gluconate Bath: Impact of Anodic Processes

THE INFLUENCE OF GLUCONATE BATH PARAMETERS ON THE RATE OF ELECTRODEPOSITION AND MECHANICAL PROPERTIES OF Co–W COATINGS

Input of Moldova in shaping modern electrochemical science and technology

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