Effect of organic additives on the hardness of Ni electrodeposited from sulfamate and watt's solutions

Hiroaki Nakano, Hideaki Tsuji, Satoshi Oue, Hisaaki Fukushima, Feng Yang, Wenhuai Tian

    Research output: Contribution to journalArticlepeer-review

    5 Citations (Scopus)

    Abstract

    Ni electrodeposition was galvanostatically conducted over a current density range 1-5000A/m2 from unagitated sulfamate (323 K) and Watt's solutions (313 K) containing polyethylene glycol (PEG) or saccharin to examine the effect of the C and S contents in the deposit and the texture on the hardness of the deposited Ni. The C content in Ni deposited from Watt's solutions containing PEG was significantly higher than that from the sulfamate solution. The S content in deposits from sulfamate and Watt's solutions containing saccharin differed slightly, except at 2000A/m2. The hardness of the deposited Ni increased with increasing C and S contents, and the rate of increase in hardness decreased at S content above 0.02 mass%. The texture of the deposited Ni changed from a field-oriented texture to an unoriented dispersed type when C and S were co-deposited with Ni by the addition of PEG and saccharin. The hardness of the unoriented dispersed type of Ni deposit was greater than that of the field-oriented type of Ni deposit.

    Original languageEnglish
    Pages (from-to)2077-2082
    Number of pages6
    JournalMaterials Transactions
    Volume52
    Issue number11
    DOIs
    Publication statusPublished - 2011

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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