XRD studies of the phase composition of the electrodeposited copper-rich Cu–Sn alloys

Juškėnas, Remigijus; Mockus, Z.; Kanapeckaitė, S.; Stalnionis, G.; Survila, Arvydas

doi:10.1016/j.electacta.2006.06.029

Cited by 58 publications

(47 citation statements)

References 17 publications

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“…Since the control of metal distribution in a bimetal nanostructure is crucial to the enhancement of catalysts performance, many efforts are being devoted to study innovative techniques to obtain different bimetallic nanostructures, including multistep synthesis [61], electrochemical dealloying [6,[39][40][41], impregnation [7,48], chemical reduction [49,50], thermal decomposition [62], electrochemical synthesis [3,63,64], microwave synthesis [65,66] and synthesis in microemulsions [30], as summarized in various reviews [2,50,51].…”

Section: Synthesis Of Bimetallic Nanoparticles In Microemulsionsmentioning

confidence: 99%

On Metal Segregation of Bimetallic Nanocatalysts Prepared by a One-Pot Method in Microemulsions

2017

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A comparative study on different bimetallic nanocatalysts prepared from microemulsions using a one-pot method has been carried out. The analysis of experimental observations, complemented by simulation studies, provides detailed insight into the factors affecting nanoparticle architecture: (1) The metal segregation in a bimetallic nanocatalysts is the result of the combination of three main kinetic parameters: the reduction rate of metal precursors (related to reduction standard potentials), the material intermicellar exchange rate (determined by microemulsion composition), and the metal precursors concentration; (2) A minimum difference between the reduction standard potentials of the two metals of 0.20 V is needed to obtain a core-shell structure. For values ∆ε 0 smaller than 0.20 V the obtaining of alloys cannot be avoided, neither by changing the microemulsion nor by increasing metal concentration; (3) As a rule, the higher the film flexibility around the micelles, the higher the degree of mixture in the nanocatalyst; (4) A minimum concentration of metal precursors is required to get a core-shell structure. This minimum concentration depends on the microemulsion flexibility and on the difference in reduction rates.

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Section: Synthesis Of Bimetallic Nanoparticles In Microemulsionsmentioning

confidence: 99%

On Metal Segregation of Bimetallic Nanocatalysts Prepared by a One-Pot Method in Microemulsions

2017

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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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“…When the deposition conditions are chosen properly, the alloy color ranges from bright yellow to grey, directly depending on the Cu:Sn ratio in the electrolytic bath 2 . However, small changes in the optimal deposition conditions may cause the formation of unattractive grey deposits 3 . Electrodeposition is one of the most widely used methods to produce metallic alloys films, as the Cu-Sn nones.…”

Section: Introductionmentioning

confidence: 99%

“…Generally, the corrosion resistance of the Cu-Sn coatings increases with the Sn content in the alloy 2 . Cu-Sn alloy films are also used as decorative layers for metallic artifacts, due to their attractive appearance 1,3 . When the deposition conditions are chosen properly, the alloy color ranges from bright yellow to grey, directly depending on the Cu:Sn ratio in the electrolytic bath 2 .…”

Section: Introductionmentioning

confidence: 99%

Cu-Sn Coatings Produced Using Environmentally Non-Aggressive Electrolyte Containing Sodium Tartrate

2017

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This work proposes the production of Cu-Sn alloy coatings with anticorrosive properties, using an environmentally non-aggressive bath. The coatings were electrodeposited on carbon steel substrate AISI 1020 using an electrolyte containing CuCl 2 and SnCl 2 , and sodium tartrate as the complexant agent. The produced coatings were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), inductively coupled plasma optical emission spectrometry (ICPOES) and electrochemical impedance spectroscopy (EIS). The film showing the highest corrosion resistance was obtained using j = 100 Am -2 . This coating was composed by 95.18 % m/m Cu and 4.83 % m/m Sn, and presented a uniform surface, without defects and small grain sizes. These characteristics probably contributed to the formation of Cu-Sn protective film onto steel substrate from a tartrate bath.

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XRD studies of the phase composition of the electrodeposited copper-rich Cu–Sn alloys

Cited by 58 publications

References 17 publications

On Metal Segregation of Bimetallic Nanocatalysts Prepared by a One-Pot Method in Microemulsions

On Metal Segregation of Bimetallic Nanocatalysts Prepared by a One-Pot Method in Microemulsions

Surfactant Effects in Cu-Sn Alloy Deposition

Cu-Sn Coatings Produced Using Environmentally Non-Aggressive Electrolyte Containing Sodium Tartrate

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