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Effect of Reduced Graphene Oxide Reinforcement on the Wear Characteristics of Electroless Ni-P Coatings

  • T. R. Tamilarasan
  • U. Sanjith
  • R. Rajendran
  • G. Rajagopal
  • J. Sudagar
Article

Abstract

Electroless composite coatings with various concentrations of reduced graphene oxide (rGO) particles were deposited onto mild steel substrate. The effects of adding rGO particles by varying their concentration from 0 to 100 mg/L on morphology, composition, microhardness, adhesion, wear and friction of the electroless composite coatings were investigated. Among the various parameters that influence the tribological behavior, sliding velocity was varied within a specific range for definite concentrations of rGO to obtain enhanced wear resistance in this study. The micrographs of the worn surfaces and indented spots were examined for the nature of wear mechanism and interfacial adhesion. The wear rate increased with increasing sliding velocity but was relatively stable for coatings with lower concentrations of rGO.

Keywords

electroless coating indentation microhardness wear 

Notes

Acknowledgments

Authors sincerely thank B.S. Abdur Rahman Crescent Institute of Science & Technology for their financial support.

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Copyright information

© ASM International 2018

Authors and Affiliations

  • T. R. Tamilarasan
    • 1
  • U. Sanjith
    • 1
  • R. Rajendran
    • 2
  • G. Rajagopal
    • 3
  • J. Sudagar
    • 4
  1. 1.Department of Mechanical Engineering, School of Mechanical SciencesB.S. Abdur Rahman Crescent UniversityVandalur, ChennaiIndia
  2. 2.Department of Automobile EngineeringSRM Institute of Science & TechnologyChennaiIndia
  3. 3.CSIR – Central Electrochemical Research InstituteKaraikudiIndia
  4. 4.Department of Metallurgical and Materials EngineeringIndian Institute of Technology MadrasChennaiIndia

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