Characterization of spark plasma sintered graphene reinforced zirconia toughened alumina (ZTA) composites

Ipek Akin; Dilan Altan; Ezgi Irem Bektas; Gamze Torun Kose; Gultekin Goller

doi:10.1007/s41779-023-00974-9

Characterization of spark plasma sintered graphene reinforced zirconia toughened alumina (ZTA) composites

Ipek Akin^*, Dilan Altan, Ezgi Irem Bektas, Gamze Torun Kose, Gultekin Goller

^*Corresponding author for this work

Department of Metallurgical and Materials Engineering

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Zirconia toughened alumina (ZTA) based composites are gaining more attention due to their mechanical properties and biocompatibility. They are widely used in orthopedic and dental applications. This study reports the production and characterization of graphene nanoplatelets (GNPs) reinforced ZTA ceramics. For this, 70Al₂O₃-(30-x)YSZ-(x)GNP systems (in vol.%, x = 1, 3, 4, 5) were prepared. All mixtures underwent densification via spark plasma sintering (SPS) at 1400 °C with 5 min hold time under 40 MPa applied pressure. The densification, resulting microstructure, and mechanical characteristics were thoroughly examined. The incorporation of GNPs into ZTA composites was found to improve fracture toughness by ~ 20% without changing the Vickers hardness values. The preliminary biocompatibility assessment of the ZTA3G sample revealed that the composite did not exhibit any cytotoxic effects against human osteoblast cells.

Original language	English
Pages (from-to)	25-33
Number of pages	9
Journal	Journal of the Australian Ceramic Society
Volume	60
Issue number	1
DOIs	https://doi.org/10.1007/s41779-023-00974-9
Publication status	Published - Feb 2024

Bibliographical note

Publisher Copyright:
© 2023, The Author(s) under exclusive licence to Australian Ceramic Society.

Funding

This work was supported by Istanbul Technical University [grant number: 38800 and project ID: 10170]. Istanbul Technical University supported this work with a project number of 38800. The authors thank Huseyin Sezer and Dr. Baris Yavas for the microstructural investigations and SPS experiments. Also, the authors thank Prof. Dr. Hakan Gur (Middle East Technical Univ.—Welding Technology & NDT Center), Assoc. Prof. Dr. Ali Celik (Eskisehir Technical University) and Hasan Dincer (Istanbul Technical University, Prof. Dr. Adnan Tekin Materials Science and Production Technologies Applied Research Center) for their help in the mechanical characterization studies.

Funders	Funder number
Eskişehir Teknik Üniversitesi
Istanbul Teknik Üniversitesi	10170, 38800

Keywords

Biocompatibility
Graphene
Spark plasma sintering
Zirconia-toughened alumina

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10.1007/s41779-023-00974-9

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abstract = "Zirconia toughened alumina (ZTA) based composites are gaining more attention due to their mechanical properties and biocompatibility. They are widely used in orthopedic and dental applications. This study reports the production and characterization of graphene nanoplatelets (GNPs) reinforced ZTA ceramics. For this, 70Al2O3-(30-x)YSZ-(x)GNP systems (in vol.%, x = 1, 3, 4, 5) were prepared. All mixtures underwent densification via spark plasma sintering (SPS) at 1400 °C with 5 min hold time under 40 MPa applied pressure. The densification, resulting microstructure, and mechanical characteristics were thoroughly examined. The incorporation of GNPs into ZTA composites was found to improve fracture toughness by ~ 20% without changing the Vickers hardness values. The preliminary biocompatibility assessment of the ZTA3G sample revealed that the composite did not exhibit any cytotoxic effects against human osteoblast cells.",

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AU - Bektas, Ezgi Irem

AU - Kose, Gamze Torun

AU - Goller, Gultekin

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N2 - Zirconia toughened alumina (ZTA) based composites are gaining more attention due to their mechanical properties and biocompatibility. They are widely used in orthopedic and dental applications. This study reports the production and characterization of graphene nanoplatelets (GNPs) reinforced ZTA ceramics. For this, 70Al2O3-(30-x)YSZ-(x)GNP systems (in vol.%, x = 1, 3, 4, 5) were prepared. All mixtures underwent densification via spark plasma sintering (SPS) at 1400 °C with 5 min hold time under 40 MPa applied pressure. The densification, resulting microstructure, and mechanical characteristics were thoroughly examined. The incorporation of GNPs into ZTA composites was found to improve fracture toughness by ~ 20% without changing the Vickers hardness values. The preliminary biocompatibility assessment of the ZTA3G sample revealed that the composite did not exhibit any cytotoxic effects against human osteoblast cells.

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Characterization of spark plasma sintered graphene reinforced zirconia toughened alumina (ZTA) composites

Abstract

Bibliographical note

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Keywords

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