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Carbothermal reduction of ZrSiO4 for in situ formation of ZrO2-based composites using spark plasma sintering.

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Title: Carbothermal reduction of ZrSiO4 for in situ formation of ZrO2-based composites using spark plasma sintering.
Authors: Irankhah, Reza1 (AUTHOR) r.irankhah@semnan.ac.ir, Mobasherpour, Iman2 (AUTHOR), Alizadeh, Masoud2 (AUTHOR), Moosavi Nezhad, Seyyed Mohsen3 (AUTHOR), Nikzad, Leila2 (AUTHOR), Azar, Saeed Samadi2 (AUTHOR)
Source: Ceramics International. Jan2023, Vol. 49 Issue 2, p2681-2688. 8p.
Subjects: Thermal plasmas, Carbon composites, Activated carbon, Bending strength, Vickers hardness, Flexural strength, Zirconium oxide
Abstract: In the present study, ZrO 2 based composites were synthesized in-situ and sintered by the novel RSPS-assisted carbothermal reduction of ZrSiO 4 (Z) in the presence of graphite (G) and Activated Carbon (AC). The RSPS process was performed using a vacuum furnace at different temperatures of 1400–1600°C for 5–15 min under an external pressure of 30 MPa. The thermodynamic analysis was conducted on the synthesis process by FactSage software. The microstructure development and mechanical properties of RSPS-ed ZrO 2 -based composites were investigated. The Phase evolution and phase content, as functions of temperature, were characterized using x-ray diffraction and FESEM/EDS analysis. The XRD studies showed that all primary ZrSiO 4 was decomposed into ZrO 2 , ZrC, SiC, and SiO 2 phases. The unreacted graphite or activated carbon was also identified in the samples. Finally, the hardness and flexural strength of the composites were examined by Vickers hardness and 3-point bending strength tests. The results indicate that the SPS-ed ZrSiO 4 + Activated Carbon composite (ZAS-3) has the best mechanical properties. A density of 2.87 ± 0.05 g/Cm3, an open porosity of 0.02%, a bending strength of 132.4 ± 11.2 MPa and a hardness of 9.86 ± 1.1 GPa were estimated for the SPS-ed ZrSiO 4 + Activated Carbon mixture of powders at 1600°C. [ABSTRACT FROM AUTHOR]
Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 160692320
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  Label: Title
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  Data: Carbothermal reduction of ZrSiO4 for in situ formation of ZrO2-based composites using spark plasma sintering.
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  Data: <searchLink fieldCode="AR" term="%22Irankhah%2C+Reza%22">Irankhah, Reza</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> r.irankhah@semnan.ac.ir</i><br /><searchLink fieldCode="AR" term="%22Mobasherpour%2C+Iman%22">Mobasherpour, Iman</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Alizadeh%2C+Masoud%22">Alizadeh, Masoud</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Moosavi+Nezhad%2C+Seyyed+Mohsen%22">Moosavi Nezhad, Seyyed Mohsen</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nikzad%2C+Leila%22">Nikzad, Leila</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Azar%2C+Saeed+Samadi%22">Azar, Saeed Samadi</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Ceramics+International%22">Ceramics International</searchLink>. Jan2023, Vol. 49 Issue 2, p2681-2688. 8p.
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  Data: <searchLink fieldCode="DE" term="%22Thermal+plasmas%22">Thermal plasmas</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+composites%22">Carbon composites</searchLink><br /><searchLink fieldCode="DE" term="%22Activated+carbon%22">Activated carbon</searchLink><br /><searchLink fieldCode="DE" term="%22Bending+strength%22">Bending strength</searchLink><br /><searchLink fieldCode="DE" term="%22Vickers+hardness%22">Vickers hardness</searchLink><br /><searchLink fieldCode="DE" term="%22Flexural+strength%22">Flexural strength</searchLink><br /><searchLink fieldCode="DE" term="%22Zirconium+oxide%22">Zirconium oxide</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In the present study, ZrO 2 based composites were synthesized in-situ and sintered by the novel RSPS-assisted carbothermal reduction of ZrSiO 4 (Z) in the presence of graphite (G) and Activated Carbon (AC). The RSPS process was performed using a vacuum furnace at different temperatures of 1400–1600°C for 5–15 min under an external pressure of 30 MPa. The thermodynamic analysis was conducted on the synthesis process by FactSage software. The microstructure development and mechanical properties of RSPS-ed ZrO 2 -based composites were investigated. The Phase evolution and phase content, as functions of temperature, were characterized using x-ray diffraction and FESEM/EDS analysis. The XRD studies showed that all primary ZrSiO 4 was decomposed into ZrO 2 , ZrC, SiC, and SiO 2 phases. The unreacted graphite or activated carbon was also identified in the samples. Finally, the hardness and flexural strength of the composites were examined by Vickers hardness and 3-point bending strength tests. The results indicate that the SPS-ed ZrSiO 4 + Activated Carbon composite (ZAS-3) has the best mechanical properties. A density of 2.87 ± 0.05 g/Cm3, an open porosity of 0.02%, a bending strength of 132.4 ± 11.2 MPa and a hardness of 9.86 ± 1.1 GPa were estimated for the SPS-ed ZrSiO 4 + Activated Carbon mixture of powders at 1600°C. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.ceramint.2022.09.248
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      – Code: eng
        Text: English
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        PageCount: 8
        StartPage: 2681
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      – SubjectFull: Thermal plasmas
        Type: general
      – SubjectFull: Carbon composites
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      – SubjectFull: Activated carbon
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      – SubjectFull: Bending strength
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      – SubjectFull: Vickers hardness
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      – SubjectFull: Flexural strength
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      – SubjectFull: Zirconium oxide
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      – TitleFull: Carbothermal reduction of ZrSiO4 for in situ formation of ZrO2-based composites using spark plasma sintering.
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              M: 01
              Text: Jan2023
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              Y: 2023
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