Improvement in the properties of nickel by nano-Cr2O3 incorporation

Srivastava, Meenu and Balaraju, JN and Rajam, KS (2010) Improvement in the properties of nickel by nano-Cr2O3 incorporation. Surface and Coatings Technology, 205 . pp. 66-75. ISSN 0257-8972

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    Nano-ceramic composite coatings were prepared by the electrodeposition method using sulphamate electrolyte. Nickel was chosen as the metal matrix and nano-Cr2O3 particles were chosen as the reinforcement. The surface morphology and the particle distribution in the coating was analysed using field emission scanning electron microscope (FESEM). The particle content was obtained using energy dispersive x-ray analysis (EDAX). A change in the surface morphology of Ni was seen on the incorporation of Cr2O3 particles. The coatings were characterized for their structure and no change in the diffraction pattern was seen between plain Ni and Ni-Cr2O3 composite. The mechanical property like microhardness and tribological behaviour of the nanocomposite coatings was studied and it was observed that the incorporation of Cr2O3 particles enhanced the mechanical properties of Ni matrix. The nanocomposites were analysed for their thermal stability and corrosion resistance. An improvement in thermal stability was observed but no change in the corrosion behaviour of Ni was seen on the incorporation of nano chromium oxide particles

    Item Type: Journal Article
    Uncontrolled Keywords: Nanocomposite; Nano-Cr2O3; Ni composite; Electrochemical impedance study
    Subjects: CHEMISTRY AND MATERIALS > Composite Materials
    Division/Department: Surface Engineering Division, Surface Engineering Division, Surface Engineering Division
    Depositing User: Meenu Srivastava Meenu
    Date Deposited: 06 Aug 2010 09:34
    Last Modified: 07 May 2012 11:23

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