Nanoindentation evaluation of suspension thermal sprayed nanocomposite WC-Co coatings

Omar Ali, Rehan Ahmed*, Nadimul Haque Faisal, Nayef M. Al-Anazi, Youssef O. Elakwah, Matheus F. A. Goosen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)


The aim of this paper is to evaluate the microstructural and nanohardness characteristics of tungsten carbide-cobalt (WC-Co) cermet coatings deposited by liquid suspension spraying. Commercially available WC-Co coating powder was milled and water based suspension was produced as feedstock for the thermal spray coating process. Microstructural evaluations of WC-Co cermet coatings included XRD (X-Ray Diffraction) and SEM (Scanning Electron Microscopy). Post spraying nanomechanical evaluations were conducted using a Berkovich nanoindenter. Results indicated relatively higher modulus but lower hardness of suspension coatings. The load displacement curves during nanoindentation were characteristic of the complex coating microstructure showing signs of microcracking and pile-up.

Original languageEnglish
Title of host publicationAdvanced Materials Research VII
PublisherTrans Tech Publications
Number of pages5
ISBN (Print)9783035710878
Publication statusPublished - 1 May 2017
Event7th International Conference on Advanced Materials Research 2017 - Kowloon, Hong Kong
Duration: 20 Jan 201722 Jan 2017

Publication series

NameKey Engineering Materials
PublisherTrans Tech Publications
ISSN (Print)1013-9826


Conference7th International Conference on Advanced Materials Research 2017
Abbreviated titleICAMR 2017
Country/TerritoryHong Kong


  • Nanoindentation
  • Suspension spraying
  • Thermal spray coating
  • WC-Co

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering


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