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Influence of pyrocarbon amount in C/C preform on the microstructure and properties of C/ZrC composites prepared via reactive melt infiltration
https://orcid.org/0000-0001-5572-9817
Highlights The densification of C/ZrC became more difficult with more pyrocarbon in preform. ZrC content in C/ZrC composites decreased from 35.3vol.% to 6.3vol.%. The σf and E of C/ZrC from preform with 34.1vol.% pyrocarbon are 181MPa and 13.0GP. The mass loss and linear recession rate of C/ZrC are 0.0031g/s and 0.0012mm/s.
Abstract C/ZrC composites were prepared via reactive melt infiltration with zirconium from porous C/C preforms with various pyrocarbon contents. As the pyrocarbon amount in C/C preform increased from 34.1vol.% to 61.7vol.%, the densification of C/ZrC composites was hindered and the ZrC content in C/ZrC composites decreased gradually from 35.3vol.% to 6.3vol.%. Meanwhile, the flexural strength of C/ZrC composites decreased initially and then increased, but the flexural modulus rose continuously. The flexural strength and modulus of the composites fabricated from the preform with 34.1 vol.% pyrocarbon matrix were 181±4MPa and 13.0±1.2GPa, respectively, and the mass loss rate and linear recession rate were 0.0031g/s and 0.0012mm/s, respectively.
Influence of pyrocarbon amount in C/C preform on the microstructure and properties of C/ZrC composites prepared via reactive melt infiltration
https://orcid.org/0000-0001-5572-9817
Highlights The densification of C/ZrC became more difficult with more pyrocarbon in preform. ZrC content in C/ZrC composites decreased from 35.3vol.% to 6.3vol.%. The σf and E of C/ZrC from preform with 34.1vol.% pyrocarbon are 181MPa and 13.0GP. The mass loss and linear recession rate of C/ZrC are 0.0031g/s and 0.0012mm/s.
Abstract C/ZrC composites were prepared via reactive melt infiltration with zirconium from porous C/C preforms with various pyrocarbon contents. As the pyrocarbon amount in C/C preform increased from 34.1vol.% to 61.7vol.%, the densification of C/ZrC composites was hindered and the ZrC content in C/ZrC composites decreased gradually from 35.3vol.% to 6.3vol.%. Meanwhile, the flexural strength of C/ZrC composites decreased initially and then increased, but the flexural modulus rose continuously. The flexural strength and modulus of the composites fabricated from the preform with 34.1 vol.% pyrocarbon matrix were 181±4MPa and 13.0±1.2GPa, respectively, and the mass loss rate and linear recession rate were 0.0031g/s and 0.0012mm/s, respectively.
Influence of pyrocarbon amount in C/C preform on the microstructure and properties of C/ZrC composites prepared via reactive melt infiltration
https://orcid.org/0000-0001-5572-9817
Highlights The densification of C/ZrC became more difficult with more pyrocarbon in preform. ZrC content in C/ZrC composites decreased from 35.3vol.% to 6.3vol.%. The σf and E of C/ZrC from preform with 34.1vol.% pyrocarbon are 181MPa and 13.0GP. The mass loss and linear recession rate of C/ZrC are 0.0031g/s and 0.0012mm/s.
Abstract C/ZrC composites were prepared via reactive melt infiltration with zirconium from porous C/C preforms with various pyrocarbon contents. As the pyrocarbon amount in C/C preform increased from 34.1vol.% to 61.7vol.%, the densification of C/ZrC composites was hindered and the ZrC content in C/ZrC composites decreased gradually from 35.3vol.% to 6.3vol.%. Meanwhile, the flexural strength of C/ZrC composites decreased initially and then increased, but the flexural modulus rose continuously. The flexural strength and modulus of the composites fabricated from the preform with 34.1 vol.% pyrocarbon matrix were 181±4MPa and 13.0±1.2GPa, respectively, and the mass loss rate and linear recession rate were 0.0031g/s and 0.0012mm/s, respectively.
Influence of pyrocarbon amount in C/C preform on the microstructure and properties of C/ZrC composites prepared via reactive melt infiltration
Chen, Si’an (author) / Zhang, Changrui (author) / Zhang, Yudi (author) / Hu, Haifeng (author)
2013-12-27
7 pages
Article (Journal)
Electronic Resource
English
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