Codeposition of copper and tin from acid sulphate solutions containing polyether sintanol DS-10 and micromolar amounts of halides

Survila, Arvydas; Mockus, Z.; Kanapeckaitė, S.; Jasulaitienė, Vitalija; Juškėnas, Remigijus

doi:10.1016/j.electacta.2006.09.040

Cited by 26 publications

(33 citation statements)

References 24 publications

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“…3 Results and discussion 3.1 Bath properties Deposition of bronze coatings from an acidic bath requires the use of an organic additive to inhibit the hydrogen evolution reaction (HER) [6,7]. Despite the high overpotential for the HER on tin, at pH < 1 the HER kinetics are fast enough to give appreciable hydrogen evolution.…”

Section: Methodsmentioning

confidence: 99%

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Electrodeposited nanocrystalline bronze alloys as replacement for Ni

Hovestad

Tacken

Mannetje

2008

Phys. Status Solidi (c)

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Nanocrystalline white‐bronze, CuSn, electroplating was investigated as alternative to Ni plating as undercoat for noble metals in jewellery applications. A strongly acidic plating bath was developed with an organic additive to suppress hydrogen evolution and obtain bright coatings. Polarization curves indicate a strong inhibition by the organic additive at the tin equilibrium potential. Mass transfer controlled deposition yields nanocrystalline bronze coating with 0–65 wt% Sn. One or two low temperature equilibrium phases, high temperature equilibrium phases or a non‐equilibrium phase were identified by XRD analyses. Bright white bronze, 50 wt% Cu/50 wt% Sn, bronze coatings show improved tarnishing resistance and similar corrosion and wear resistance as undercoat for gold on actual jewellery parts compared to nickel. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Section: Methodsmentioning

confidence: 99%

“…Without an additive in the bronze bath powdery black deposits at a current efficiency of less than 20% are obtained. It is known [6,7,10] that polyethylene glycol (PEG) based additives can strongly inhibit the HER on tin. The extent of this inhibition is clearly shown by the polarisation curves given in Fig.…”

Section: Methodsmentioning

confidence: 99%

Electrodeposited nanocrystalline bronze alloys as replacement for Ni

Hovestad

Tacken

Mannetje

2008

Phys. Status Solidi (c)

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“…A specific feature of electrochemically deposited bronze coatings is the presence of various phases that are thermodynamically stable only at high temperatures. In addition, our recent investigations (35,36,39) demonstrated that Cu-Sn coatings obtained in the presence some polyethers contain the intermediate hexagonal hcp phase. When heated at 350 o C this phase transforms into ζ-Cu 10 Sn 3 .…”

Section: Codeposition Of Copper and Tinmentioning

confidence: 99%

“…Both approaches made it possible to determine kinetic parameters of the cathodic processes and to obtain the adsorption characteristics of different surfactants. This communication is based on the results of the investigations (27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39) performed at the Institute of Chemistry (Vilnius, Lithuania).…”

Section: Introductionmentioning

confidence: 99%

Surfactant Effects in Cu-Sn Alloy Deposition

et al. 2011

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Adsorption behavior of different polyethers (PE) on copper and tin was studied in combination with kinetic investigations. No pronounced effect of PE was detected in Cu|Cu(II) system. In contrast, these substances show a high inhibition activity on the tin electrode. Halides enhance adsorption ability on copper electrode but suppress it on tin; this effect intensifies in the sequence: Cl -< Br -< I -. The inhibition degree of surfactants increases with the length of hydrocarbon chain. Underpotential deposition of Sn(II) is observed in the region of Cu(II) limiting current. Deposits obtained present a mixture of pure copper, α-CuSn phase and hcp phase. The characteristic current minimum arises in the region where the free Sn phase becomes thermodynamically stable. Cl -ions broaden the range of current densities where yellow bronze can be obtained, but Br -ions show the opposite effect. Iodides retard the reduction of Cu(II) and tin prevails in the coatings.

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“…These alloys are characterized by good anticorrosion properties, especially in aggressive industrial environments such as sulfur dioxide (SO 2 )-containing atmosphere (Kesternich Test, DIN 50018). 34 However, even if bright yellow bronzes can be electrodeposited easily, 35 their color restricts the field of applications for aesthetic purposes. On the other hand, white bronze alloy coatings tend to be porous, 36 which causes them to be more prone to preferential localized attack at the pore site in corrosive and chloride-bearing environments such as sweat and other body fluids.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Mechanism in Artificial Sweat Solution of In-Bearing White Bronze Alloy

Caporali¹,

Bardi²

2012

CORROSION

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Corrosion properties of thin layers of a copper-tin-zinc-indium alloy ("white bronze") were investigated in an artificial sweat solution indicating poor resistance properties. The coating degraded via pitting, generalized, and crevice corrosion, as evidenced by scanning electron microscopy-energy-dispersive x-ray analysis (SEM-EDX) investigation. The corrosion mechanism was investigated in situ by means of electrochemical impedance spectroscopy (EIS), and ex situ by x-ray photoelectron spectroscopy (XPS). These combined results demonstrate that the key point of the corrosion failure is the removal of the passive In-Sn oxides.

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Codeposition of copper and tin from acid sulphate solutions containing polyether sintanol DS-10 and micromolar amounts of halides

Cited by 26 publications

References 24 publications

Electrodeposited nanocrystalline bronze alloys as replacement for Ni

Electrodeposited nanocrystalline bronze alloys as replacement for Ni

Surfactant Effects in Cu-Sn Alloy Deposition

Corrosion Mechanism in Artificial Sweat Solution of In-Bearing White Bronze Alloy

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