Modelling of surfactants and chemistry for electroless Ni-P plating

Amir Farzaneh, Maryam Ehteshamzadeh, Andrew J. Cobley

    Research output: Contribution to journalArticle

    7 Citations (Scopus)
    34 Downloads (Pure)

    Abstract

    In this work, the effects of the chemical formulation in an electroless nickel phosphorus electrolyte on the physical and mechanical performance of the obtained coating were evaluated. The study not only paid particular attention to the concentration and type of surfactant (anionic, cationic and non-ionic) but also investigated the effect of pH and concentration of sodium hypophosphite in the electrolyte. A three-level Box–Behnken factorial design related to response surface methodology was employed to model the effect of the mentioned parameters and optimise the properties of the coating. Two models fitted with experimental data obtained from microhardness and thickness measurement of the Ni-P coatings. The optimum conditions were determined at pH = 5 with 32 g L−1 sodium hypophosphite and 1.5 g L−1 anionic surfactant. According to the derived models, this formulation would give a Ni-P coating with a microhardness of 1080 Hv and a thickness of 23 µm.

    Original languageEnglish
    Pages (from-to)454-461
    Number of pages8
    JournalSurface Engineering
    Volume34
    Issue number6
    Early online date16 Feb 2017
    DOIs
    Publication statusPublished - 2018

    Keywords

    • Electroless nickel phosphorus coating
    • surfactant
    • response surface methodology

    ASJC Scopus subject areas

    • Conservation
    • Condensed Matter Physics
    • Surfaces and Interfaces
    • Surfaces, Coatings and Films
    • Materials Chemistry

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