The effect of Tl(I) on the hard gold alloy electrodeposition of Au–Co from acid baths

Hosseini, Mir Ghasem; Ebrahimi, Sedigheh

doi:10.1016/j.jelechem.2010.04.013

Cited by 21 publications

(12 citation statements)

References 16 publications

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“…Hosseini and Ebrahimi found that a Co complex in a citrate based electrolyte at high cathodic polarisation inhibited the crystal growth of Au-Co electrodeposits and decreased the grain size. 35 The inß uence of Tl + was also investigated, although different effects were observed at different potentials. …”

Section: Coppermentioning

confidence: 99%

Recent applications of SEM and AFM for assessing topography of metal and related coatings — a review

Smith

Larson²,

Campbell

2011

Transactions of the IMF

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Recent literature describing the use of scanning electron microscopy (SEM) and atomic force microscopy (AFM) in the investigation of morphology and topography of metal surface coatings has been reviewed. SEM has been shown to give valuable data on many properties such as Þ lm uniformity, thickness and cracking, wear patterns and debris, and bond failures. In addition, much information is made possible on coating phase structure, grain size and boundaries, uniformity and heterogeneity, growth mechanisms and porosity. Combined with energy dispersive X-ray analysis and chemical mapping techniques, SEM can be especially powerful. The newer technique of AFM has some advantages over SEM; however, studies tend to focus on imaging nanostructures and quantitative determination of deposit surface roughness. Advances in the application of the technique are expected to further its use, for example, in the measurement of friction, adhesion and elasticity.

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Section: Coppermentioning

confidence: 99%

Recent applications of SEM and AFM for assessing topography of metal and related coatings — a review

Smith

Larson²,

Campbell

2011

Transactions of the IMF

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“…Au coatings are commonly used as contact materials to ensure stability and low contact resistance upon sliding contact in the electronics industry [1][2][3][4]. Soft Au which is not alloyed is one of the best metals with a high electrical conductivity, and it shows excellent corrosion resistance under most working conditions.…”

Section: Introductionmentioning

confidence: 99%

“…In high-reliability systems, high-performance Au coatings are required, and alloying Au with a small amount of other metal elements, such as Co and Ni, can generate harder Au coatings which exhibit distinct performance improvement [1,[6][7][8]. Hard Au coatings are generally obtained from acidic-cyanide baths in which nickel or cobalt salts are added as the hardening/brightening agents [3,4,[9][10][11][12]. Although Au-Ni and Au-Co alloy coatings exhibit a higher wear resistance compared to soft Au, adding solid lubricant materials into alloy coatings is beneficial for decreasing the wear rate by minimizing the adhesive wear.…”

Section: Introductionmentioning

confidence: 99%

“…Amorphous C (a-C) including diamond-like C (DLC) with significant fraction of sp 3 bonds and graphite-like C (GLC) with a high content of sp 2 bonds, has been widely researched as hardening or solid lubricant particles for the production of protective composite coatings by magnetron sputtering [17][18][19]. a-C lubricated TiC and WC sputtered coatings show a higher wear performance and significantly lower wear rates compared with pure coatings [20,21].…”

Section: Introductionmentioning

confidence: 99%

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Development and characterization of magnetron sputtered self-lubricating Au-Ni/a-C nano-composite coating on CuCrZr alloy substrate

Chen

Qiao

Hillairet

et al. 2019

Applied Surface Science

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Compounding Au-Ni with carbon (C) lubricants is a feasible approach to improve its mechanical properties and wear performance. In this study, 3.5 µm-thick Au-Ni/C nanocomposite coatings with a low residual stress on CuCrZr substrates by magnetron sputtering were developed. Face-centered cubic and hexagonal close-packed stacking structures were both confirmed in the composite coatings based on transmission electron microscopy and X-ray diffraction analyses. Amorphous C (a-C) was confirmed to be the structure of C in the composite coatings, and its graphitization transition with an increase in the C content was validated by X-ray photoemission spectra and Raman spectroscopy. By compounding 0.88 wt.% a-C, the hardness of the Au-Ni/a-C coating reached 400 HV, which is twice higher than that of the Au-Ni coating. The electrical resistivity of the Au-Ni/a-C coating is relatively stable with an increase in the a-C content. As graphitization occurred on the wear track, the produced composite coatings showed a minimum wear rate of 2.2×10-6 mm 3 /N·m under atmospheric conditions, which is half that of the Au-Ni reference coating. Under vacuum, the wear performance of the produced Au-Ni/a-C composite coatings was similar to that of the Au-Ni reference coating.

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“…They have allowed the development of uniform and resistant copper coatings. The presence of additives in electroplating baths also produces a better leveling effect on the deposits surface [16][17][18][19][20][21][22]. However, their releases could present a danger to the environment.…”

Section: Introductionmentioning

confidence: 99%

Environmental Cinnamon Extracts Effect on Electrodeposition of Copper in an Acidic Bath

Dahmani¹,

Galai²,

Elhasnaoui³

et al. 2018

Port. Electrochim. Acta

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A new industrial electrodeposition of copper in an acidic medium using an environmental cinnamon extract has been developed. The obtained coatings were adherent and uniform, and their deposition rate has reached 23 µm/h. In addition, their quality has been improved by cinnamon extract addition. Cyclic voltammetry and electrochemical impedance spectroscopy have showed that the electrodeposition mechanism depends on the electrolyte constituents and the additive presence. The SEM observation indicated that the coatings morphology has been improved by cinnamon extract addition.

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The effect of Tl(I) on the hard gold alloy electrodeposition of Au–Co from acid baths

Cited by 21 publications

References 16 publications

Recent applications of SEM and AFM for assessing topography of metal and related coatings — a review

Recent applications of SEM and AFM for assessing topography of metal and related coatings — a review

Development and characterization of magnetron sputtered self-lubricating Au-Ni/a-C nano-composite coating on CuCrZr alloy substrate

Environmental Cinnamon Extracts Effect on Electrodeposition of Copper in an Acidic Bath

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