Journal of Ultrafine Grained and Nanostructured Materials

Journal of Ultrafine Grained and Nanostructured Materials

Formation of nano-structured tribolayer on Ti-6Al-4V during sliding in a phosphate buffer saline solution

Document Type : Research Paper

Authors
Behrooz Rahmatian 1
H. M. Ghasemi 1
Mahmoud Heydarzadeh sohi 2
Patrick DeBaets 3
1 School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran
2 School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Iran
3 Ghent University, Department of Electromechanical, Systems and Metal Engineering, Soete Laboratory, Technologiepark 46, B-9052, Zwijnaarde, Ghent, Belgium
10.22059/jufgnsm.2024.02.03
Abstract
The formation of a tribological layer (i.e., tribolayer) affects friction and wear behavior during sliding. The mechanisms involved can be better understood by the characterization of this layer. The wear corrosion behavior of Ti 6Al 4V was studied using a reciprocating ball-on-flat tribometer at a frequency of 1 Hz and under normal loads of 1 N, 5 N, and 15 N against an alumina ball for 3600 cycles of sliding in a phosphate buffer saline (PBS) solution. Scanning Electron Microscopy (SEM) images, along with EDS analysis showed a greater coverage of a tribolayer under a normal load of 15 N. Transmission electron microscopy (TEM) studies indicated that a tribolayer with thickness up to 1000 nm, consisting of nanograins with diameters of less than 10 nm, formed on the deformed wear surface of Ti 6Al 4V under a normal load of 15 N. This protected tribolayer, under normal loads of 5 N and 15 N, resulted in a decrease of 40% in the coefficient of friction and a 15-20% reduction in the specific tribocorrosion rate compared with that at the lower applied load.
Keywords
Ti-6Al-4V
Tribocorrosion
Biomaterials
Tribolayer, Nanostructured
TEM

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Journal of Ultrafine Grained and Nanostructured Materials
Volume 57, Issue 2
December 2024
Pages 128-134

  • Receive Date 12 August 2024
  • Revise Date 04 October 2024
  • Accept Date 04 October 2024