Innovative Chemical Conversion PHosphate Coatings to Promote Osseointegration and Biocompatibility of Titanium Implants (PHO-TIM)

Recent publications
Micromorphology and properties of novel phosphate conversion coatings based on zinc-magnesium and zinc-zirconium deposited on Ti6Al4V
Journal: Surfaces and Interfaces (2025)
DOI: 10.1016/j.surfin.2025.107884

This study reports two novel phosphate conversion coatings deposited on Ti6Al4V by chemical conversion, based on Mg-Zn and Zr-Zn systems. The zirconium-containing coatings exhibit a more compact morphology and significantly improved corrosion resistance, while magnesium-based systems show acicular structures and intercrystalline zones.

  • Zr coatings → dense and compact morphology
  • Mg coatings → acicular crystals
  • Hopeite & phosphophyllite phases identified
  • Up to 9× higher corrosion resistance
  • Improved cell viability

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