Spark plasma sintered Al2O3-YSZ-TiO2 composites: Processing, characterization and in vivo evaluation

Ozden Ormanci, Ipek Akin, Filiz Sahin, Onuralp Yucel, Viorica Simon, Simona Cavalu, Gultekin Goller*

*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: Dergiye katkıMakalebilirkişi

30 Atıf (Scopus)

Özet

Al2O3 and Al2O3-YSZ composites containing 3 and 5 wt.% TiO2 were prepared by spark plasma sintering at temperatures of 1350-1400 °C for 300 s under a pressure of 40 MPa. The grain growth of alumina was suppressed by the addition of YSZ. Al 2O3-YSZ composites showed higher hardness than monolithic Al2O3. There was not a considerable difference in hardness values for Al2O3-YSZ composites containing 10 and 20 vol.% YSZ and the addition of TiO2 decreased the hardness of the composites. The fracture toughness of Al2O3 increased from 2.8 MPa·m1/2 to 4.3 MPa·m1/2 with the addition of 10 vol.% YSZ, further addition resulted in higher fracture toughness values. The fracture toughness values were increased with TiO2 addition and the highest value of fracture toughness, 5.3 MPa·m 1/2, was achieved with the addition of 20 vol.% YSZ and 5 wt.% TiO2. Preliminary in vivo tests demonstrated the biocompatibility and osseointegration of the composites after 6 week post-implantation in femur of Wistar rats.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)16-23
Sayfa sayısı8
DergiMaterials Science and Engineering C
Hacim40
DOI'lar
Yayın durumuYayınlandı - 1 Tem 2014

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