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*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)16-23
Number of pages8
JournalMaterials Science and Engineering C
Volume40
DOIs
Publication statusPublished - 1 Jul 2014

Funding

This work was supported by the Scientific and Technological Research Council of Turkey (project number: 111M455 ). The authors would like to thank H. Dincer for his contribution in SPS studies and H. Sezer and T. Alpak for SEM studies.

FundersFunder number
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu111M455

    Keywords

    • In vivo evaluation
    • Spark plasma sintering
    • YSZ

    Fingerprint

    Dive into the research topics of 'Spark plasma sintered Al2O3-YSZ-TiO2 composites: Processing, characterization and in vivo evaluation'. Together they form a unique fingerprint.

    Cite this