Tribocorrosion response of laser clad TiNiZrO2 composite coatings on Ti6Al4V

Babatunde Abiodun Obadele, Anthony Andrews, Peter Apata Olubambi, Mathew Thoppil Mathew, Sisa Pityana

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)


The design of tribocorrosion resistant composite on Ti6Al4V alloy by laser surface cladding of admixed metal-ceramic powder was successfully achieved using a 2 kW CW ytterbium laser system (YLS). The effects of TiNiZrO2 addition on the tribocorrosion properties of the synthesized composite coatings were investigated in 1 M H2SO4 solution using open circuit potential and potentiodynamic polarization techniques. The experimental results showed that TiNiZrO2 refined the microstructure to flower-like structure. A strong metallurgical bond was obtained between the coatings and the Ti6Al4V alloy substrate with inter-columnar widmansttaten α΄ grains at the interface. There was a significant increase in surface microindentation hardness values of the clad layers. Also, the presence of zirconia shifted the tribocorrosion potential to more noble values and significantly enhanced the tribocorrosion resistance of the composites.

Original languageEnglish
Title of host publicationLight Metals Technology 2015
EditorsHilda K. Chikwanda, Silethelwe Chikosha
PublisherTrans Tech Publications Ltd
Number of pages6
ISBN (Print)9783038355625
Publication statusPublished - 2015
Externally publishedYes
Event7th International Light Metals Technology Conference, LMT 2015 - Port Elizabeth, South Africa
Duration: 27 Jul 201529 Jul 2015

Publication series

NameMaterials Science Forum
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752


Conference7th International Light Metals Technology Conference, LMT 2015
Country/TerritorySouth Africa
CityPort Elizabeth


  • Laser cladding
  • Ti6Al4V
  • Tribocorrosion
  • ZrO

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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