Effect of Calcium Titanate and/or Titanium-Phosphides in the Properties of Titanium Composites for Implant Materials

Abstract:

Titanium-based composites containing Ti_xP_y phase (s) or CaTiO₃ and Ti_xP_y phase (s) were produced by a non conventional method using suitable mixtures of TiH₂ powder and phosphoric acid (TiH₂/P), or TiH₂ and 10 vol.% of calcium phosphate (TiH₂/CP), respectively. The composites were produced with the same phosphor molar concentration. The mixtures were prepared by ultrasound in water, dried in a rotary evaporator, pressed at 600 MPa and vacuum-sintered at 1200 °C for 2 hours. The mixtures were well dispersed by ultrasound and agglomerate-free. The analyses show that titanium particles were coated with Ti_xP_y phase (s) for the TiH₂/P composite or with an intermediary layer of Ti_xP_y phase (s) and an external deposit of calcium titanate for the TiH₂/CP composite. The TiH₂/P composite presented higher compressive strength and about the same contact angle compared to the TiH₂/CP composite. However, both materials displayed lower contact angle than that of pure titanium.

• Periodical: Advanced Materials Research (Volume 906)
• Pages: 226-231
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.906.226
• Online since: April 2014
• Authors: Enori Gemelli*, Patrícia Borges da Silva Maia, Fabio Nery, Nelson Heriberto Almeida Camargo, Vinícius André Rodrigues Henriques, Jailson de Jesus, Priscila Ferraz Franczak
• Keywords: Calcium Phosphate, Calcium Titanate, Composite, Titanium, Titanium-Phosphide

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