Journal
MATERIALS & DESIGN
Volume 120, Issue -, Pages 394-403Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2017.02.038
Keywords
Ti6Al4V; ZrO2; Metal-ceramic; Microstructure; Mechanical properties
Categories
Funding
- FTC [SFRH/BD/112280/2015, UID/EEA/04436/2013]
- FEDER funds through the COMPETE - Programa Operational Competitividade e Internacionalizacao (POCI) [POCI-01-0145-FEDER-006941, NORTE-01-0145-FEDER-000018-HAMaBICo]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/112280/2015] Funding Source: FCT
Ask authors/readers for more resources
The development of new design approaches for biomedical applications using conventional and well accepted bio inert materials is an actual challenge. This study proposes a bilayered materials design approach obtained by hot pressing and is concerned with the influence of sintering pressure on the interface reaction between titanium alloy (Ti6AI4V) and zirconia (ZrO2), on density and mechanical properties of the Ti6AI4V-ZrO2. For this purpose, different sintering pressures were studied (P = 5, 20 and 100 MPa). Bilayered materials were produced by hot pressing process, at T = 1175 degrees C. Microstructural characterization showed that Ti6AI4V reacts with ZrO2 (for P >= 20 MPa) and that the interface reaction is strongly dependent on pressure. Additionally, an oxygen-deficient ZrO2 _ (x) black zirconia layer was obtained for specimens produced at P = 20 and 100 MPa as result of decreased O/Zr ratio due to Ti diffusion into ZrO2 side. Young's modulus and hardness properties were evaluated by nano indentation test. The results showed that these properties are influenced by sintering pressure, increasing with an increase on sintering pressure, with the highest improvement for specimens produced at higher pressure. (C) 2017 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available