Mechanism for the development of Sn-Cu alloy coatings produced by pulsed current electrodeposition

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    Abstract

    Pulsed current (PC) electrodeposition has become an essential tool for producing coatings in a wide range of industries. The pulsed current can have a significant influence on the composition, morphology and properties of electrodeposited coatings and this is particularly true when plating an alloy. In this study, the mechanism for the development of Sn-Cu alloy coatings produced by PC electrodeposition was investigated. Sn-Cu alloy coatings produced by PC electrodeposition were essentially composed of a dual layer of Sn-Cu electrodeposits and Cu6Sn5 inter metallic compounds (IMCs). In addition, it was observed that pulsed Sn-Cu electrodeposits exhibited an increased Cu content. Experiments were carefully designed to elucidate the mechanism for this important finding and based on their results a theory is proposed which explains the increased Cu content in terms of a metal displacement reaction occurring during the ‘relaxation’ time of PC electrodeposition.
    Original languageEnglish
    Pages (from-to)120-127
    Number of pages8
    JournalMaterials Letters
    Volume217
    Early online date31 Jan 2018
    DOIs
    Publication statusPublished - 15 Apr 2018

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    Electrodeposition
    electrodeposition
    coatings
    Coatings
    Metallic compounds
    Plating
    Relaxation time
    plating
    Metals
    relaxation time
    industries
    Chemical analysis
    Industry
    Experiments
    metals

    Bibliographical note

    NOTICE: this is the author’s version of a work that was accepted for publication in Materials Letters. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Materials Letters, [(Vol 217,p120-123, (2018)] DOI: 10.1016/j.matlet.2018.01.094

    © 2018, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

    Keywords

    • Pulsed current techniques
    • Sn-Cu coatings
    • electrodeposition
    • mechanism

    Cite this

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    title = "Mechanism for the development of Sn-Cu alloy coatings produced by pulsed current electrodeposition",
    abstract = "Pulsed current (PC) electrodeposition has become an essential tool for producing coatings in a wide range of industries. The pulsed current can have a significant influence on the composition, morphology and properties of electrodeposited coatings and this is particularly true when plating an alloy. In this study, the mechanism for the development of Sn-Cu alloy coatings produced by PC electrodeposition was investigated. Sn-Cu alloy coatings produced by PC electrodeposition were essentially composed of a dual layer of Sn-Cu electrodeposits and Cu6Sn5 inter metallic compounds (IMCs). In addition, it was observed that pulsed Sn-Cu electrodeposits exhibited an increased Cu content. Experiments were carefully designed to elucidate the mechanism for this important finding and based on their results a theory is proposed which explains the increased Cu content in terms of a metal displacement reaction occurring during the ‘relaxation’ time of PC electrodeposition.",
    keywords = "Pulsed current techniques, Sn-Cu coatings, electrodeposition, mechanism",
    author = "Liang Wu and John Graves and Andrew Cobley",
    note = "NOTICE: this is the author’s version of a work that was accepted for publication in Materials Letters. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Materials Letters, [(Vol 217,p120-123, (2018)] DOI: 10.1016/j.matlet.2018.01.094 {\circledC} 2018, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/",
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    AU - Wu, Liang

    AU - Graves, John

    AU - Cobley, Andrew

    N1 - NOTICE: this is the author’s version of a work that was accepted for publication in Materials Letters. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Materials Letters, [(Vol 217,p120-123, (2018)] DOI: 10.1016/j.matlet.2018.01.094 © 2018, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

    PY - 2018/4/15

    Y1 - 2018/4/15

    N2 - Pulsed current (PC) electrodeposition has become an essential tool for producing coatings in a wide range of industries. The pulsed current can have a significant influence on the composition, morphology and properties of electrodeposited coatings and this is particularly true when plating an alloy. In this study, the mechanism for the development of Sn-Cu alloy coatings produced by PC electrodeposition was investigated. Sn-Cu alloy coatings produced by PC electrodeposition were essentially composed of a dual layer of Sn-Cu electrodeposits and Cu6Sn5 inter metallic compounds (IMCs). In addition, it was observed that pulsed Sn-Cu electrodeposits exhibited an increased Cu content. Experiments were carefully designed to elucidate the mechanism for this important finding and based on their results a theory is proposed which explains the increased Cu content in terms of a metal displacement reaction occurring during the ‘relaxation’ time of PC electrodeposition.

    AB - Pulsed current (PC) electrodeposition has become an essential tool for producing coatings in a wide range of industries. The pulsed current can have a significant influence on the composition, morphology and properties of electrodeposited coatings and this is particularly true when plating an alloy. In this study, the mechanism for the development of Sn-Cu alloy coatings produced by PC electrodeposition was investigated. Sn-Cu alloy coatings produced by PC electrodeposition were essentially composed of a dual layer of Sn-Cu electrodeposits and Cu6Sn5 inter metallic compounds (IMCs). In addition, it was observed that pulsed Sn-Cu electrodeposits exhibited an increased Cu content. Experiments were carefully designed to elucidate the mechanism for this important finding and based on their results a theory is proposed which explains the increased Cu content in terms of a metal displacement reaction occurring during the ‘relaxation’ time of PC electrodeposition.

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    JO - Materials Letters

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