Fabrication of C/C–SiC–ZrB<sub>2</sub> Ultra-High Temperature Composites through Liquid–Solid Chemical Reaction

In this paper, we aimed to improve the oxidation and ablation resistance of carbon fiber-reinforced carbon (CFC) composites at temperatures above 2000 °C. C/C–SiC–ZrB<sub>2</sub> ultra-high temperature ceramic composites were fabricated through a complicated liquid–solid reactive process...

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Autores principales:	Qian Sun, Huifeng Zhang, Chuanbing Huang, Weigang Zhang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	reactive melt infiltration C/C–SiC–ZrB<sub>2</sub> composites composition microstructural evolution formation mechanism Crystallography QD901-999
Acceso en línea:	https://doaj.org/article/9a45f3d9cbd64b8695516be17c06307c
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spelling	oai:doaj.org-article:9a45f3d9cbd64b8695516be17c06307c2021-11-25T17:18:41ZFabrication of C/C–SiC–ZrB<sub>2</sub> Ultra-High Temperature Composites through Liquid–Solid Chemical Reaction10.3390/cryst111113522073-4352https://doaj.org/article/9a45f3d9cbd64b8695516be17c06307c2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4352/11/11/1352https://doaj.org/toc/2073-4352In this paper, we aimed to improve the oxidation and ablation resistance of carbon fiber-reinforced carbon (CFC) composites at temperatures above 2000 °C. C/C–SiC–ZrB<sub>2</sub> ultra-high temperature ceramic composites were fabricated through a complicated liquid–solid reactive process combining slurry infiltration (SI) and reactive melt infiltration (RMI). A liquid Si–Zr10 eutectic alloy was introduced, at 1600 °C, into porous CFC composites containing two kinds of boride particles (B<sub>4</sub>C and ZrB<sub>2</sub>, respectively) to form a SiC–ZrB<sub>2</sub> matrix. The effects and mechanism of the introduced B<sub>4</sub>C and ZrB<sub>2</sub> particles on the formation reaction and microstructure of the final C/C–SiC–ZrB<sub>2</sub> composites were investigated in detail. It was found that the composite obtained from a C/C–B<sub>4</sub>C preform displayed a porous and loose structure, and the formed SiC–ZrB<sub>2</sub> matrix distributed heterogeneously in the composite due to the asynchronous generation of the SiC and ZrB<sub>2</sub> ceramics. However, the C/C–SiC–ZrB<sub>2</sub> composite, prepared from a C/C–ZrB<sub>2</sub> preform, showed a very dense matrix between the fiber bundles, and elongated plate-like ZrB<sub>2</sub> ceramics appeared in the matrix, which were derived from the dissolution–diffusion–precipitation mechanism of the ZrB<sub>2</sub> clusters. The latter composite exhibited a relatively higher ZrB<sub>2</sub> content (9.51%) and bulk density (2.82 g/cm<sup>3</sup>), along with lower open porosity (3.43%), which endowed this novel composite with good mechanical properties, including pseudo-plastic fracture behavior.Qian SunHuifeng ZhangChuanbing HuangWeigang ZhangMDPI AGarticlereactive melt infiltrationC/C–SiC–ZrB<sub>2</sub> compositescompositionmicrostructural evolutionformation mechanismCrystallographyQD901-999ENCrystals, Vol 11, Iss 1352, p 1352 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	reactive melt infiltration C/C–SiC–ZrB<sub>2</sub> composites composition microstructural evolution formation mechanism Crystallography QD901-999
spellingShingle	reactive melt infiltration C/C–SiC–ZrB<sub>2</sub> composites composition microstructural evolution formation mechanism Crystallography QD901-999 Qian Sun Huifeng Zhang Chuanbing Huang Weigang Zhang Fabrication of C/C–SiC–ZrB<sub>2</sub> Ultra-High Temperature Composites through Liquid–Solid Chemical Reaction
description	In this paper, we aimed to improve the oxidation and ablation resistance of carbon fiber-reinforced carbon (CFC) composites at temperatures above 2000 °C. C/C–SiC–ZrB<sub>2</sub> ultra-high temperature ceramic composites were fabricated through a complicated liquid–solid reactive process combining slurry infiltration (SI) and reactive melt infiltration (RMI). A liquid Si–Zr10 eutectic alloy was introduced, at 1600 °C, into porous CFC composites containing two kinds of boride particles (B<sub>4</sub>C and ZrB<sub>2</sub>, respectively) to form a SiC–ZrB<sub>2</sub> matrix. The effects and mechanism of the introduced B<sub>4</sub>C and ZrB<sub>2</sub> particles on the formation reaction and microstructure of the final C/C–SiC–ZrB<sub>2</sub> composites were investigated in detail. It was found that the composite obtained from a C/C–B<sub>4</sub>C preform displayed a porous and loose structure, and the formed SiC–ZrB<sub>2</sub> matrix distributed heterogeneously in the composite due to the asynchronous generation of the SiC and ZrB<sub>2</sub> ceramics. However, the C/C–SiC–ZrB<sub>2</sub> composite, prepared from a C/C–ZrB<sub>2</sub> preform, showed a very dense matrix between the fiber bundles, and elongated plate-like ZrB<sub>2</sub> ceramics appeared in the matrix, which were derived from the dissolution–diffusion–precipitation mechanism of the ZrB<sub>2</sub> clusters. The latter composite exhibited a relatively higher ZrB<sub>2</sub> content (9.51%) and bulk density (2.82 g/cm<sup>3</sup>), along with lower open porosity (3.43%), which endowed this novel composite with good mechanical properties, including pseudo-plastic fracture behavior.
format	article
author	Qian Sun Huifeng Zhang Chuanbing Huang Weigang Zhang
author_facet	Qian Sun Huifeng Zhang Chuanbing Huang Weigang Zhang
author_sort	Qian Sun
title	Fabrication of C/C–SiC–ZrB<sub>2</sub> Ultra-High Temperature Composites through Liquid–Solid Chemical Reaction
title_short	Fabrication of C/C–SiC–ZrB<sub>2</sub> Ultra-High Temperature Composites through Liquid–Solid Chemical Reaction
title_full	Fabrication of C/C–SiC–ZrB<sub>2</sub> Ultra-High Temperature Composites through Liquid–Solid Chemical Reaction
title_fullStr	Fabrication of C/C–SiC–ZrB<sub>2</sub> Ultra-High Temperature Composites through Liquid–Solid Chemical Reaction
title_full_unstemmed	Fabrication of C/C–SiC–ZrB<sub>2</sub> Ultra-High Temperature Composites through Liquid–Solid Chemical Reaction
title_sort	fabrication of c/c–sic–zrb<sub>2</sub> ultra-high temperature composites through liquid–solid chemical reaction
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/9a45f3d9cbd64b8695516be17c06307c
work_keys_str_mv	AT qiansun fabricationofccsiczrbsub2subultrahightemperaturecompositesthroughliquidsolidchemicalreaction AT huifengzhang fabricationofccsiczrbsub2subultrahightemperaturecompositesthroughliquidsolidchemicalreaction AT chuanbinghuang fabricationofccsiczrbsub2subultrahightemperaturecompositesthroughliquidsolidchemicalreaction AT weigangzhang fabricationofccsiczrbsub2subultrahightemperaturecompositesthroughliquidsolidchemicalreaction
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Fabrication of C/C–SiC–ZrB<sub>2</sub> Ultra-High Temperature Composites through Liquid–Solid Chemical Reaction

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