Effect of titania content and biomimetic coating on the mechanical properties of the Y-TZP/TiO2 composite.

摘要: Abstract Objective To investigate the effect of titania addition (0, 10 and 30 mol%) on microstructure, relative density, Young’s modulus (E), Poisson’s ratio (υ), mechanical properties (flexural strength, σf, Weibull modulus, m) a Y-TZP/TiO2 composite. The presence biomimetic coating microstructure was also evaluated. Methods Y-TZP (3 mol% yttria) composite (10 or 30 mol% titania) were synthesized by co-precipitation. powders pressed sintered at 1400°C/2 h. surfaces, with without coating, characterized X-ray diffraction analysis scanning electron microscopy. density measured Archimedes’ principle. E υ ultrasonic pulse-echo method. For specimens (n = 30 for each group) tested in universal testing machine. Results Titania increased grain size caused significant decrease flexural strength (in MPa, control 815.4a; T10 455.7b T30 336.0c), GPa, 213.4a; 155.8b 134.0c) (control 99.0%a; 94.4%c 96.3%b) 30% substantial increase m υ. Biomimetic did not affect Significance coated layer CaP has great potential to be used as implant material. Although affected composite, application jeopardize its reliability.