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High strength C/Si‒Ni‒C composites fabricated by reaction melt infiltration with Si‒Ni alloy at lower temperature.

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Title: High strength C/Si‒Ni‒C composites fabricated by reaction melt infiltration with Si‒Ni alloy at lower temperature.
Authors: Chen, Yiming1 (AUTHOR), Zhang, Wei1 (AUTHOR), Han, Yangjie2 (AUTHOR), Li, Song2 (AUTHOR) lisong1996@126.com, Xue, Rong1 (AUTHOR), Zeng, Yuke1 (AUTHOR), Qin, Qianhui1 (AUTHOR), Wang, Jiping1 (AUTHOR) jpwang@xjtu.edu.cn, Xiao, Zhichao1 (AUTHOR), Xia, Hongyan1 (AUTHOR)
Source: Journal of the American Ceramic Society. Mar2025, Vol. 108 Issue 3, p1-10. 10p.
Subjects: Melt infiltration, Liquidus temperature, Flexural strength, Fracture toughness, Carbon fibers, Carbon fiber-reinforced ceramics
Abstract: Silicon‒nickel alloy (Si‒Ni) was first used for fabricating continuous carbon fiber reinforced ceramic matrix composites by reaction melt infiltration process. Based on Si‒Ni phase diagram, 66.7 at.% Si‒Ni was chosen, which has a lower liquidus temperature of 1115°C. The C/Si‒Ni‒C composites were infiltrated at temperature of 1270°C‒1390°C, and the prepared composite consists of C, SiC, NiSi, and NiSi2 phases. The density of the composite is higher than 2.29 g/cm3 and their open porosity is below 3%, indicating the composite was infiltrated completely by the Si‒Ni alloy. The C/Si‒Ni‒C composite exhibits significantly higher flexural strength and fracture toughness compared to the C/C‒SiC composite infiltrated with pure silicon at 1500°C. Specifically, the flexural strength and fracture toughness of the C/Si‒Ni‒C composite infiltrated at 1390°C increase by 140% and 300%, respectively. The improvement of mechanical properties contributed to the low reactivity between silicon‒nickel with carbon fibers, and the lower infiltration temperature, which can reduce degradation of carbon fiber as reinforcement. Moreover, the NiSi2 and NiSi alloy phases in the C/Si‒Ni‒C composite replace the brittle silicon phase in the C/C‒SiC composite, which can obviously enhance the fracture toughness. [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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  Label: Title
  Group: Ti
  Data: High strength C/Si‒Ni‒C composites fabricated by reaction melt infiltration with Si‒Ni alloy at lower temperature.
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  Data: <searchLink fieldCode="AR" term="%22Chen%2C+Yiming%22">Chen, Yiming</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Wei%22">Zhang, Wei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Han%2C+Yangjie%22">Han, Yangjie</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Song%22">Li, Song</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> lisong1996@126.com</i><br /><searchLink fieldCode="AR" term="%22Xue%2C+Rong%22">Xue, Rong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zeng%2C+Yuke%22">Zeng, Yuke</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Qin%2C+Qianhui%22">Qin, Qianhui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Jiping%22">Wang, Jiping</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> jpwang@xjtu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Xiao%2C+Zhichao%22">Xiao, Zhichao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xia%2C+Hongyan%22">Xia, Hongyan</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>. Mar2025, Vol. 108 Issue 3, p1-10. 10p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Melt+infiltration%22">Melt infiltration</searchLink><br /><searchLink fieldCode="DE" term="%22Liquidus+temperature%22">Liquidus temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Flexural+strength%22">Flexural strength</searchLink><br /><searchLink fieldCode="DE" term="%22Fracture+toughness%22">Fracture toughness</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+fibers%22">Carbon fibers</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+fiber-reinforced+ceramics%22">Carbon fiber-reinforced ceramics</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Silicon‒nickel alloy (Si‒Ni) was first used for fabricating continuous carbon fiber reinforced ceramic matrix composites by reaction melt infiltration process. Based on Si‒Ni phase diagram, 66.7 at.% Si‒Ni was chosen, which has a lower liquidus temperature of 1115°C. The C/Si‒Ni‒C composites were infiltrated at temperature of 1270°C‒1390°C, and the prepared composite consists of C, SiC, NiSi, and NiSi2 phases. The density of the composite is higher than 2.29 g/cm3 and their open porosity is below 3%, indicating the composite was infiltrated completely by the Si‒Ni alloy. The C/Si‒Ni‒C composite exhibits significantly higher flexural strength and fracture toughness compared to the C/C‒SiC composite infiltrated with pure silicon at 1500°C. Specifically, the flexural strength and fracture toughness of the C/Si‒Ni‒C composite infiltrated at 1390°C increase by 140% and 300%, respectively. The improvement of mechanical properties contributed to the low reactivity between silicon‒nickel with carbon fibers, and the lower infiltration temperature, which can reduce degradation of carbon fiber as reinforcement. Moreover, the NiSi2 and NiSi alloy phases in the C/Si‒Ni‒C composite replace the brittle silicon phase in the C/C‒SiC composite, which can obviously enhance the fracture toughness. [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.20235
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      – Code: eng
        Text: English
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        PageCount: 10
        StartPage: 1
    Subjects:
      – SubjectFull: Melt infiltration
        Type: general
      – SubjectFull: Liquidus temperature
        Type: general
      – SubjectFull: Flexural strength
        Type: general
      – SubjectFull: Fracture toughness
        Type: general
      – SubjectFull: Carbon fibers
        Type: general
      – SubjectFull: Carbon fiber-reinforced ceramics
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      – TitleFull: High strength C/Si‒Ni‒C composites fabricated by reaction melt infiltration with Si‒Ni alloy at lower temperature.
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              M: 03
              Text: Mar2025
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              Y: 2025
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