Tribocorrosion response of laser clad TiNiZrO2 composite coatings on Ti6Al4V

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

doi:10.4028/www.scientific.net/MSF.828-829.345

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 proceeding › Conference contribution › peer-review

1 Citation (Scopus)

Abstract

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 language	English
Title of host publication	Light Metals Technology 2015
Editors	Hilda K. Chikwanda, Silethelwe Chikosha
Publisher	Trans Tech Publications Ltd
Pages	345-350
Number of pages	6
ISBN (Print)	9783038355625
DOIs	https://doi.org/10.4028/www.scientific.net/MSF.828-829.345
Publication status	Published - 2015
Externally published	Yes
Event	7th International Light Metals Technology Conference, LMT 2015 - Port Elizabeth, South Africa Duration: 27 Jul 2015 → 29 Jul 2015

Publication series

Name	Materials Science Forum
Volume	828-829
ISSN (Print)	0255-5476
ISSN (Electronic)	1662-9752

Conference

Conference	7th International Light Metals Technology Conference, LMT 2015
Country/Territory	South Africa
City	Port Elizabeth
Period	27/07/15 → 29/07/15

Keywords

Laser cladding
Ti6Al4V
Tribocorrosion
ZrO

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.4028/www.scientific.net/MSF.828-829.345

Cite this

Obadele, B. A., Andrews, A., Olubambi, P. A., Mathew, M. T., & Pityana, S. (2015). Tribocorrosion response of laser clad TiNiZrO₂ composite coatings on Ti6Al4V. In H. K. Chikwanda, & S. Chikosha (Eds.), Light Metals Technology 2015 (pp. 345-350). (Materials Science Forum; Vol. 828-829). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.828-829.345

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title = "Tribocorrosion response of laser clad TiNiZrO2 composite coatings on Ti6Al4V",

abstract = "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.",

keywords = "Laser cladding, Ti6Al4V, Tribocorrosion, ZrO",

author = "Obadele, {Babatunde Abiodun} and Anthony Andrews and Olubambi, {Peter Apata} and Mathew, {Mathew Thoppil} and Sisa Pityana",

note = "Publisher Copyright: {\textcopyright} (2015) Trans Tech Publications, Switzerland.; 7th International Light Metals Technology Conference, LMT 2015 ; Conference date: 27-07-2015 Through 29-07-2015",

year = "2015",

doi = "10.4028/www.scientific.net/MSF.828-829.345",

language = "English",

isbn = "9783038355625",

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Obadele, BA, Andrews, A, Olubambi, PA, Mathew, MT & Pityana, S 2015, Tribocorrosion response of laser clad TiNiZrO₂ composite coatings on Ti6Al4V. in HK Chikwanda & S Chikosha (eds), Light Metals Technology 2015. Materials Science Forum, vol. 828-829, Trans Tech Publications Ltd, pp. 345-350, 7th International Light Metals Technology Conference, LMT 2015, Port Elizabeth, South Africa, 27/07/15. https://doi.org/10.4028/www.scientific.net/MSF.828-829.345

Tribocorrosion response of laser clad TiNiZrO₂ composite coatings on Ti6Al4V. / Obadele, Babatunde Abiodun; Andrews, Anthony; Olubambi, Peter Apata et al.
Light Metals Technology 2015. ed. / Hilda K. Chikwanda; Silethelwe Chikosha. Trans Tech Publications Ltd, 2015. p. 345-350 (Materials Science Forum; Vol. 828-829).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Obadele, Babatunde Abiodun

AU - Andrews, Anthony

AU - Olubambi, Peter Apata

AU - Mathew, Mathew Thoppil

AU - Pityana, Sisa

N1 - Publisher Copyright: © (2015) Trans Tech Publications, Switzerland.

PY - 2015

Y1 - 2015

N2 - 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.

AB - 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.

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