Login / Signup

Biotribocorrosion of 3D-Printed silica-coated Ti6Al4V for load-bearing implants.

Ali AfrouzianJose D AvilaAmit Bandyopadhyay
Published in: Journal of materials research (2021)
Laser-based 3D Printing was utilized to deposit a silica (SiO 2 ) coating on the surface of Ti6Al4V (Ti64) alloy for implementation onto articulating surfaces of load-bearing implants. The surface laser melting (SLM) technique was implemented in 1, and 2 laser passes (1LP and 2LP) after SiO 2 deposition to understand the influence of remelting on the coating's hardness and tribological performance. It was observed that compositional and microstructural features increased the cross-sectional hardness. Wear rate was observed to decrease from 2.9×10 -4 in the Ti64 to 5.2 ×10 -6 , 3.8×10 -6 , and 2.1×10 -7 mm 3 /Nm for the as-processed or zero laser-pass (0LP), 1LP, and 2LP, respectively. Coated samples displayed a positive shift in open-circuit potential (OCP) during linear wear by displaying a 368, 85, and 613 mV increase compared to Ti64 for 0LP, 1LP, and 2LP, respectively. Our results showed promising tribological performance of SiO 2 coated Ti6Al4V for articulating surfaces of load-bearing implants.
Keyphrases
  • cross sectional
  • healthcare
  • high speed
  • high resolution
  • minimally invasive
  • escherichia coli
  • cystic fibrosis
  • mass spectrometry
  • white matter
  • staphylococcus aureus
  • pseudomonas aeruginosa