Influence of Cobalt on Manganese incorporation in Ni-Co coatings

Srivastava, Meenu and William Grips, VK and Rajam, KS (2010) Influence of Cobalt on Manganese incorporation in Ni-Co coatings. J Appl Electrochem, 40 . pp. 777-782. ISSN 1572-8838

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    Abstract

    The effect of alloying <1wt%Mn with plain Ni, Ni-Co alloys and plain Co coatings in terms of the structure and properties has been studied. The alloys were electrodeposited from an additive free sulphamate electrolyte. The Mn concentration in the electrolyte was maintained at 5g L-1 so as to obtain less than 1wt%Mn content in the alloy coatings. The Energy Dispersive X-ray analysis (EDX) showed that the Mn content reduced from 0.97wt% to 0.05wt% with increase in Co content from 0 wt% to 98wt% in the alloy coating. An increase in microhardness was obtained on the addition of Mn to Ni/Ni-Co alloys. The X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM) studies revealed a change in crystal structure and morphology. Pin-on-disc tribology test revealed better wear performance of Ni-18wt%Co-Mn alloy coating compared to the other Ni-Mn/Ni-Co-Mn alloy coatings.

    Item Type: Journal Article
    Uncontrolled Keywords: Ni-Co-Mn alloy, Ni-Co alloy, Microstructure, Mechanical Properties
    Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
    CHEMISTRY AND MATERIALS > Metals and Metallic Materials
    Division/Department: Surface Engineering Division, Surface Engineering Division, Surface Engineering Division
    Depositing User: Meenu Srivastava Meenu
    Date Deposited: 06 Aug 2010 10:00
    Last Modified: 06 Aug 2010 10:00
    URI: http://nal-ir.nal.res.in/id/eprint/8900

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