A Novel Porous Diamond - Titanium Biomaterial: Structure, Microstructure, Physico-Mechanical Properties and Biocompatibility

ZULMIRA A.S. GUIMARÃES, RENATO A. DAMATTA, RENAN S. GUIMARÃES, MARCELLO FILGUEIRA
2017 Anais da Academia Brasileira de Ciências  
With the aim of introducing permanent prostheses with main properties equivalent to cortical human bone, Ti-diamond composites were processed through powder metallurgy. Grade 1 titanium and mixtures of Ti powder with 2%, 5% and 10 wt% diamond were compacted at 100MPa, and then sintered at 1250°C/2hr/10 -6 mbar. Sintered samples were studied in the point of view of their microstructures, structures, yield strength and elastic modulus. The results showed that the best addition of diamonds was 2
more » ... of diamonds was 2 wt%, which led to a uniform porosity, yield strength of 370MPa and elastic modulus of 13.9 GPa. Samples of Ti and Ti-2% diamond were subjected to in vitro cytotoxicity test, using cultures of VERO cells, and it resulted in a biocompatible and nontoxic composite material.
doi:10.1590/0001-3765201720160750 pmid:29236854 fatcat:5bgr2fpt65dkzdzs3dbsx3m6pu