Effects of heat treatment on mechanical and thermophysical properties of KD‐SA SiCf/SiC composites.
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| Title: | Effects of heat treatment on mechanical and thermophysical properties of KD‐SA SiC |
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| Authors: | Zhang, Jin1 (AUTHOR), Wang, Yanfei1 (AUTHOR) wangyanfei@nudt.edu.cn, Chen, Xiangjian1 (AUTHOR), Gou, Yanzi1 (AUTHOR), Li, Duan1 (AUTHOR), Liu, Rongjun1 (AUTHOR) rongjunliu@nudt.edu.cn |
| Source: | Journal of the American Ceramic Society. Jun2025, Vol. 108 Issue 6, p1-15. 15p. |
| Subjects: | Mechanical heat treatment, Pyrolytic graphite, Thermal conductivity, Thermophysical properties, Flexural strength |
| Abstract: | The mechanical and thermophysical properties of KD‐SA SiCf/SiC composites manufactured by the hybrid chemical vapor infiltration (CVI)–precursor impregnation and pyrolysis (PIP) technique were systematically studied at 1400, 1600, and 1800°C, respectively, under argon atmosphere for 1 h. The results show that Si element in SiC fiber escapes and diffuses to pyrolytic carbon (PyC) interphase after 1400°C heat treatment, forming a Si‐rich line in PyC interphase. With a further increase of heat treatment temperature, the Si sublimation in the Si‐rich line leads to the cracking of the PyC interphase as well as the increase of the order degree of the PyC interphase, resulting in a significant decrease in the interfacial shear strength of the composite. Due to the decomposition of PIP SiC matrix and Si sublimation of SiC fiber, the flexural strength of the composite decreases after heat treatment at 1400°C. When the heat treatment temperature increases to 1600 and 1800°C, the flexural strength of the composite is slightly increased compared with 1400°C. Moreover, the thermal conductivity of the composites has been improved significantly by raising temperatures due to an increase of the crystallinity of the PIP SiC matrix. [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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| Header | DbId: egs DbLabel: Engineering Source An: 184273628 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Effects of heat treatment on mechanical and thermophysical properties of KD‐SA SiC<subscript>f</subscript>/SiC composites. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Zhang%2C+Jin%22">Zhang, Jin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Yanfei%22">Wang, Yanfei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> wangyanfei@nudt.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Xiangjian%22">Chen, Xiangjian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gou%2C+Yanzi%22">Gou, Yanzi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Duan%22">Li, Duan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Rongjun%22">Liu, Rongjun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> rongjunliu@nudt.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+the+American+Ceramic+Society%22">Journal of the American Ceramic Society</searchLink>. Jun2025, Vol. 108 Issue 6, p1-15. 15p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Mechanical+heat+treatment%22">Mechanical heat treatment</searchLink><br /><searchLink fieldCode="DE" term="%22Pyrolytic+graphite%22">Pyrolytic graphite</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+conductivity%22">Thermal conductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Thermophysical+properties%22">Thermophysical properties</searchLink><br /><searchLink fieldCode="DE" term="%22Flexural+strength%22">Flexural strength</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The mechanical and thermophysical properties of KD‐SA SiCf/SiC composites manufactured by the hybrid chemical vapor infiltration (CVI)–precursor impregnation and pyrolysis (PIP) technique were systematically studied at 1400, 1600, and 1800°C, respectively, under argon atmosphere for 1 h. The results show that Si element in SiC fiber escapes and diffuses to pyrolytic carbon (PyC) interphase after 1400°C heat treatment, forming a Si‐rich line in PyC interphase. With a further increase of heat treatment temperature, the Si sublimation in the Si‐rich line leads to the cracking of the PyC interphase as well as the increase of the order degree of the PyC interphase, resulting in a significant decrease in the interfacial shear strength of the composite. Due to the decomposition of PIP SiC matrix and Si sublimation of SiC fiber, the flexural strength of the composite decreases after heat treatment at 1400°C. When the heat treatment temperature increases to 1600 and 1800°C, the flexural strength of the composite is slightly increased compared with 1400°C. Moreover, the thermal conductivity of the composites has been improved significantly by raising temperatures due to an increase of the crystallinity of the PIP SiC matrix. [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: BibEntity: Identifiers: – Type: doi Value: 10.1111/jace.20424 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 15 StartPage: 1 Subjects: – SubjectFull: Mechanical heat treatment Type: general – SubjectFull: Pyrolytic graphite Type: general – SubjectFull: Thermal conductivity Type: general – SubjectFull: Thermophysical properties Type: general – SubjectFull: Flexural strength Type: general Titles: – TitleFull: Effects of heat treatment on mechanical and thermophysical properties of KD‐SA SiCf/SiC composites. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Zhang, Jin – PersonEntity: Name: NameFull: Wang, Yanfei – PersonEntity: Name: NameFull: Chen, Xiangjian – PersonEntity: Name: NameFull: Gou, Yanzi – PersonEntity: Name: NameFull: Li, Duan – PersonEntity: Name: NameFull: Liu, Rongjun IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: Jun2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 00027820 Numbering: – Type: volume Value: 108 – Type: issue Value: 6 Titles: – TitleFull: Journal of the American Ceramic Society Type: main |
| ResultId | 1 |
