- Tytuł:
- The influence of sintering conditions on microstructure and mechanical properties of titanium dioxide scaffolds for the treatment of bone tissue defects
- Autorzy:
-
Rumian, Ł.
Reczyńska, K.
Wrona, M.
Tiainen, H.
Haugen, H. J.
Pamuła, E. - Powiązania:
- https://bibliotekanauki.pl/articles/307325.pdf
- Data publikacji:
- 2015
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Tematy:
-
porowatość
inżynieria tkankowa
ditlenek tytanu
właściwości mechaniczne
porosity
titanium dioxide
bone tissue engineering
mechanical properties
polymer sponge replication
ceramic scaffolds - Opis:
- In this study the attempts to improve mechanical properties of highly-porous titanium dioxide scaffolds produced by polymer sponge replication method were investigated. Particularly the effect of two-step sintering at different temperatures on microstructure and mechanical properties (compression test) of the scaffolds were analysed. To this end microcomputed tomography and scanning electron microscopy were used as analytical methods. Our experiments showed that the most appropriate conditions of manufacturing were when the scaffolds were heat-treated at 1500 °C for 1 h followed by sintering at 1200 °C for 20 h. Such scaffolds exhibited the highest compressive strength which was correlated with the highest linear density and the lowest size of grains. Moreover, grain size distribution was narrower with predominating fraction of fine grains 10–20 μm in size. Smaller grains and higher linear density suggested that in this case densification process prevailed over undesirable process of grain coarsening, which finally resulted in improved mechanical properties of the scaffolds.
- Źródło:
-
Acta of Bioengineering and Biomechanics; 2015, 17, 1; 3-9
1509-409X
2450-6303 - Pojawia się w:
- Acta of Bioengineering and Biomechanics
- Dostawca treści:
- Biblioteka Nauki
Artykuł