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Influence of electron irradiation on self‐healing and thermal oxidation of SiC dispersed yttrium silicate composites.

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Title: Influence of electron irradiation on self‐healing and thermal oxidation of SiC dispersed yttrium silicate composites.
Authors: Nguyen, Huong Thi1 (AUTHOR), Kuo, Yen‐Ling2 (AUTHOR), Nanko, Makoto2 (AUTHOR) nanko@mech.nagaokaut.ac.jp, Thorogood, Gordon James3 (AUTHOR), Xu, Alan3,4 (AUTHOR), Do, Thi Mai Dung5 (AUTHOR), Suematsu, Hisayuki5 (AUTHOR)
Source: Journal of the American Ceramic Society. Apr2025, Vol. 108 Issue 4, p1-10. 10p.
Subjects: Surface cracks, Electron accelerators, Crystal lattices, Crack closure, Electric currents, Electron beams
Abstract: Electron irradiation‐induced acceleration of self‐healing and high‐temperature oxidation has been discovered in SiC/Y2Si2O7–Y2SiO5 composites. Bulk samples were produced by pulsed electric current sintering. These samples were exposed to an electron beam from the pulsed intense relativistic electron beam accelerator with a beam energy of 2 MeV at irradiation doses of 10–40 kGy. The self‐healing and high‐temperature oxidation experiments were carried out at 1100–1300°C for 1–24 h in laboratory air. Electron irradiation significantly improved the self‐healing effectiveness. The closure of surface cracks was caused by the volume expansion of SiC via transformation to SiO2 and the outward diffusion of Y3+ ions. Electron irradiation also increased the thickness of the internally oxidized zone, formed by the inward diffusion of O2− ions. Enhanced self‐healing and oxidation behavior were associated with defect formation induced by electron beam exposure, which facilitated the diffusion of ions within the crystal lattice. [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.)
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An: 183980152
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  Data: Influence of electron irradiation on self‐healing and thermal oxidation of SiC dispersed yttrium silicate composites.
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  Data: <searchLink fieldCode="AR" term="%22Nguyen%2C+Huong+Thi%22">Nguyen, Huong Thi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kuo%2C+Yen‐Ling%22">Kuo, Yen‐Ling</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nanko%2C+Makoto%22">Nanko, Makoto</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> nanko@mech.nagaokaut.ac.jp</i><br /><searchLink fieldCode="AR" term="%22Thorogood%2C+Gordon+James%22">Thorogood, Gordon James</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xu%2C+Alan%22">Xu, Alan</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Do%2C+Thi+Mai+Dung%22">Do, Thi Mai Dung</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Suematsu%2C+Hisayuki%22">Suematsu, Hisayuki</searchLink><relatesTo>5</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>. Apr2025, Vol. 108 Issue 4, p1-10. 10p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Surface+cracks%22">Surface cracks</searchLink><br /><searchLink fieldCode="DE" term="%22Electron+accelerators%22">Electron accelerators</searchLink><br /><searchLink fieldCode="DE" term="%22Crystal+lattices%22">Crystal lattices</searchLink><br /><searchLink fieldCode="DE" term="%22Crack+closure%22">Crack closure</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+currents%22">Electric currents</searchLink><br /><searchLink fieldCode="DE" term="%22Electron+beams%22">Electron beams</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Electron irradiation‐induced acceleration of self‐healing and high‐temperature oxidation has been discovered in SiC/Y2Si2O7–Y2SiO5 composites. Bulk samples were produced by pulsed electric current sintering. These samples were exposed to an electron beam from the pulsed intense relativistic electron beam accelerator with a beam energy of 2 MeV at irradiation doses of 10–40 kGy. The self‐healing and high‐temperature oxidation experiments were carried out at 1100–1300°C for 1–24 h in laboratory air. Electron irradiation significantly improved the self‐healing effectiveness. The closure of surface cracks was caused by the volume expansion of SiC via transformation to SiO2 and the outward diffusion of Y3+ ions. Electron irradiation also increased the thickness of the internally oxidized zone, formed by the inward diffusion of O2− ions. Enhanced self‐healing and oxidation behavior were associated with defect formation induced by electron beam exposure, which facilitated the diffusion of ions within the crystal lattice. [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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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1111/jace.20292
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 10
        StartPage: 1
    Subjects:
      – SubjectFull: Surface cracks
        Type: general
      – SubjectFull: Electron accelerators
        Type: general
      – SubjectFull: Crystal lattices
        Type: general
      – SubjectFull: Crack closure
        Type: general
      – SubjectFull: Electric currents
        Type: general
      – SubjectFull: Electron beams
        Type: general
    Titles:
      – TitleFull: Influence of electron irradiation on self‐healing and thermal oxidation of SiC dispersed yttrium silicate composites.
        Type: main
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            NameFull: Nguyen, Huong Thi
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            NameFull: Kuo, Yen‐Ling
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            NameFull: Nanko, Makoto
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            NameFull: Thorogood, Gordon James
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            NameFull: Xu, Alan
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            NameFull: Do, Thi Mai Dung
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            NameFull: Suematsu, Hisayuki
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            – D: 01
              M: 04
              Text: Apr2025
              Type: published
              Y: 2025
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              Value: 108
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            – TitleFull: Journal of the American Ceramic Society
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