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Micro-hardness Study of Ni–P, Ni–W–P, and Ni–P/Ni–W–P Electroless Coating

  • Rishav Kumar BaranwalEmail author
  • Arghya Mukherjee
  • Souparna Banerjee
  • Subhasish Sarkar
  • Gautam Majumdar
Conference paper
  • 47 Downloads
Part of the Lecture Notes on Multidisciplinary Industrial Engineering book series (LNMUINEN)

Abstract

This paper compares the micro-hardness of a binary (Ni–P), ternary (Ni–W–P), and a duplex coating (Ni–P/Ni–W–P) over the copper substrate. Vickers Hardness Test is taken for determining the hardness of the coating due to its compatibility of the indenter with the electroless coating. Scanning Electron Microscopy (SEM) of the images of the Ni–W–P coating shows the porous nature while Ni–P coating shows very less porosity compared to Ni–W–P. Hence, the Ni–P/Ni–W–P coating shows very less porosity since it has Ni–P layer as the inner layer. The hardness of duplex layer is greater than the ternary coating which in turn is better than the binary coating. The efficiency of the Ni–P is 57.33%, Ni–W–P is 75.81%, and of duplex is 80.71%.

Keywords

Electroless Vickers hardness test Scanning electron microscope 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Rishav Kumar Baranwal
    • 1
    Email author
  • Arghya Mukherjee
    • 1
  • Souparna Banerjee
    • 1
  • Subhasish Sarkar
    • 1
  • Gautam Majumdar
    • 1
  1. 1.Department of Mechanical EngineeringJadavpur UniversityKolkataIndia

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