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Effects of sintering temperature and zirconia content on the mechanical and microstructural properties of MgO, TiO2 and CeO2 doped alumina–zirconia (ZTA) ceramic

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Abstract

The effects of sintering temperature and ZrO2 addition on the hardness and fracture toughness of zirconia toughened alumina (ZTA)–MgO–TiO2 composite was investigated. 5 wt.% CeO2 was added to ZTA containing 5 wt.% of MgO and 5 wt.% of TiO2. Two sets of composition A5ZMTC and A15ZMTC were used consisting of 5 wt.% and 15 wt.% of 3YSZ, respectively, to analyze the effect of CeO2 on the base composition. The powders were pressed into pellets and sintered at different temperatures of 1450 °C, 1500 °C, 1600 °C and 1650 °C for 3 h. Density, hardness and fracture toughness increased to a maximum value and then decreased. From the XRD analysis, Ce0.7Zr0.3O2 in only A5ZMTC and CeAl11O18 in only A15ZMTC are evident. The highest fracture toughness of 12.03 MPam1/2 (Casellas) was achieved at 1500 °C in A15ZMTC and maximum hardness of 14.15 GPa was obtained in A5ZMTC sintered at 1450 °C.

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Acknowledgements

The journal was aided by the kind help of the pilot plant and process development centre (PP & PDC) of Bangladesh council of scientific and industrial research (BCSIR) and Department of Applied Chemistry and Chemical Engineering, University of Dhaka.

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Authors and Affiliations

  1. Pilot Plant and Process Development Centre, Bangladesh Council of Scientific and Industrial Research, Dhaka, 1205, Bangladesh

    Md. Al-Amin & M. A. Gafur

  2. Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka, 1000, Bangladesh

    Md. Al-Amin & Md. Zahangir Alam

  3. Department of Materials and Metallurgical Engineering, Bangladesh University of Engineering and Technology, Dhaka, 1000, Bangladesh

    Homayra Tabassum Mumu & Saugata Sarker

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Contributions

MA-A: methodology, writing—original draft, formal analysis, data curation, investigation. HTM: data curation, methodology, writing—original draft, visualization, investigation. SS: methodology, data curation, validation. MZA: project administration, supervision, validation. MAG: conceptualization, supervision, writing—review and editing, formal analysis, project administration, validation.

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Correspondence to M. A. Gafur.

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Al-Amin, M., Mumu, H.T., Sarker, S. et al. Effects of sintering temperature and zirconia content on the mechanical and microstructural properties of MgO, TiO2 and CeO2 doped alumina–zirconia (ZTA) ceramic. J. Korean Ceram. Soc. 60, 141–154 (2023). https://doi.org/10.1007/s43207-022-00194-0

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