In vitro cellular response and hydrothermal aging of two-step sintered Nb2O5 doped ceria stabilized zirconia ceramics

Bejugama, Shiva and Chameettachal, Shibu and Pati, Falguni and Pandey, Ajoy Kumar (2021) In vitro cellular response and hydrothermal aging of two-step sintered Nb2O5 doped ceria stabilized zirconia ceramics. Ceramics International, 47 (2). pp. 1594-1601. ISSN 02728842

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Abstract

Niobia (1 mol. %) doped Ceria Stabilized Zirconia (NbCSZ) powders were synthesized using a co-precipitation method. The synthesized powders were uniaxially compacted and sintered in air. The two-step sintering method was adopted to sinter the samples, and the sintering schedule was optimized based on density, grain size, the phase present, and the hardness of the sintered sample. It was observed that the two-step sintering method effectively suppressed the grain growth of NbCSZ samples and helped in achieving a finer grain size of 1.57 μm along with the hardness of 1195 HV10 and optimum fracture toughness value 6.20 MPa m1/2. The Low-Temperature Degradation (LTD) behavior of the sintered samples was estimated through an accelerated hydrothermal aging test, which revealed that the samples are highly resistant to LTD and shown no phase change even after 150 h of study. Moreover, the cytocompatibility of the NbCSZ was tested by culturing MG63 cells on the samples for 7 days. The NbCSZ was found to be highly biocompatible as evident from cell viability and metabolic activity assay.

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IITH Creators:
IITH CreatorsORCiD
Chameettachal, ShibuUNSPECIFIED
Pati, Falgunihttp://orcid.org/0000-0002-3588-1800
Item Type: Article
Uncontrolled Keywords: Coprecipitation method; Fracture toughness values; Hydrothermal aging; Low-temperature degradations; Metabolic activity; Stabilized zirconia; Synthesized powder; Two step sintering methods
Subjects: Biomedical Engineering
Divisions: Department of Biomedical Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 10 Jul 2021 05:58
Last Modified: 10 Jul 2021 05:58
URI: http://raiith.iith.ac.in/id/eprint/8210
Publisher URL: http://doi.org/10.1016/j.ceramint.2020.08.275
OA policy: https://v2.sherpa.ac.uk/id/publication/13167
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