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- Title
Composites based on titanium alloy Ti-6Al-4V with an addition of inert ceramics and bioactive ceramics for medical applications fabricated by spark plasma sintering (SPS method).
- Authors
Dudek, A.; Klimas, M.
- Abstract
The focus of the investigations presented in this paper is placed on metallic-ceramic composites based on a titanium alloy matrix (Ti-6Al-4V) with a 20 wt% and 40 wt% addition of aluminium oxide (Al2O3), hydroxyapatite ceramics (Ca10(PO4)6(OH)2) or YSZ (zirconia stabilized with 8 wt% yttria Y2O3) obtained using the spark plasma sintering method. The specimens were compressed at 35 MPa and sintered in a shielding gas (argon) medium at the temperature of 1000 °C in an SPS HP 5 for 25 min. The obtained composites were subjected to microstructural analysis using light microscope and X-ray quality analysis using a D8 DISCOVER Bruker diffractometer. Hydrostatic weighing in deionized water according to the PN EN ISO 2738: 2001 standard was also used to evaluate the density, porosity and water absorption capacity. The topology of the surface of the metallic-ceramic composites was determined using a Hommel T1000 profilometer. The mechanical properties (microhardness) were measured using a hardness tester with Brinell indenter HBW 2.5/187.5. The resistance to wear was evaluated by means of a ball wear testing stand. Weability of the obtained biomaterials was evaluated by measurement of the contact angle Θ.
- Subjects
TITANIUM alloys; BIOACTIVE compounds; SINTERING; PLASMA gas research; HOT working
- Publication
Materialwissenschaft und Werkstoffechnik, 2015, Vol 46, Issue 3, p237
- ISSN
0933-5137
- Publication type
Article
- DOI
10.1002/mawe.201500334