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Production of Layered ZrB2‐SiC/ HfB2‐TaC‐SiC Composites by a Slip Casting Method.

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Title: Production of Layered ZrB2‐SiC/ HfB2‐TaC‐SiC Composites by a Slip Casting Method.
Authors: Smith, Steven1,2 (AUTHOR) steven.m.smith479.ctr@army.mil, Ku, Nicholas1 (AUTHOR), Moore, Tucker1 (AUTHOR)
Source: Journal of the American Ceramic Society. Jul2026, Vol. 109 Issue 7, p1-9. 9p.
Subjects: Slip casting, Sintering, Ultra-high-temperature ceramics, Laminated materials, Grain size
Abstract: Layered, boride‐based composites were formed by aqueous slip casting and pressureless sintering. Green densities of the cast ceramics were as high as 63%, and relative densities of ∼98% were reached for the densified ceramics. Layered composites consisting of a ZrB2‐SiC core with a HfB2‐TaC‐SiC shell or alternating layers of the two compositions were successfully co‐sintered to a relative density >98%. The interface between layers showed a coherent diffusion zone between the two compositions without cracking, but the interface contained multiple boride phases. The layered composites had finer grain sizes compared to the single composition ceramics that were densified at the same temperature. This sequential casting route enabled the production of near‐net shape ultra‐high temperature ceramics with layered compositions. [ABSTRACT FROM AUTHOR]
Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell 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.)
Database: Engineering Source
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DbLabel: Engineering Source
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PubType: Academic Journal
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  Data: Production of Layered ZrB<subscript>2</subscript>‐SiC/ HfB<subscript>2</subscript>‐TaC‐SiC Composites by a Slip Casting Method.
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  Data: <searchLink fieldCode="AR" term="%22Smith%2C+Steven%22">Smith, Steven</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> steven.m.smith479.ctr@army.mil</i><br /><searchLink fieldCode="AR" term="%22Ku%2C+Nicholas%22">Ku, Nicholas</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Moore%2C+Tucker%22">Moore, Tucker</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+the+American+Ceramic+Society%22">Journal of the American Ceramic Society</searchLink>. Jul2026, Vol. 109 Issue 7, p1-9. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Slip+casting%22">Slip casting</searchLink><br /><searchLink fieldCode="DE" term="%22Sintering%22">Sintering</searchLink><br /><searchLink fieldCode="DE" term="%22Ultra-high-temperature+ceramics%22">Ultra-high-temperature ceramics</searchLink><br /><searchLink fieldCode="DE" term="%22Laminated+materials%22">Laminated materials</searchLink><br /><searchLink fieldCode="DE" term="%22Grain+size%22">Grain size</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Layered, boride‐based composites were formed by aqueous slip casting and pressureless sintering. Green densities of the cast ceramics were as high as 63%, and relative densities of ∼98% were reached for the densified ceramics. Layered composites consisting of a ZrB2‐SiC core with a HfB2‐TaC‐SiC shell or alternating layers of the two compositions were successfully co‐sintered to a relative density >98%. The interface between layers showed a coherent diffusion zone between the two compositions without cracking, but the interface contained multiple boride phases. The layered composites had finer grain sizes compared to the single composition ceramics that were densified at the same temperature. This sequential casting route enabled the production of near‐net shape ultra‐high temperature ceramics with layered compositions. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell 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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        Value: 10.1111/jace.71004
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      – Code: eng
        Text: English
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        PageCount: 9
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      – SubjectFull: Slip casting
        Type: general
      – SubjectFull: Sintering
        Type: general
      – SubjectFull: Ultra-high-temperature ceramics
        Type: general
      – SubjectFull: Laminated materials
        Type: general
      – SubjectFull: Grain size
        Type: general
    Titles:
      – TitleFull: Production of Layered ZrB2‐SiC/ HfB2‐TaC‐SiC Composites by a Slip Casting Method.
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            NameFull: Smith, Steven
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            NameFull: Ku, Nicholas
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            – D: 01
              M: 07
              Text: Jul2026
              Type: published
              Y: 2026
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              Value: 109
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