Effects of the interface on the graphitization of a carbon fiber/pyrolytic carbon composite

Zhang, Fuqin; Huang, Baiyun; Huang, Qizhong; Xiong, X. A.; Cheng, Tengfei

doi:10.1016/s0008-6223(02)00398-6

Cited by 20 publications

(10 citation statements)

References 8 publications

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“…The SiC bonding layer was prepared by pack cementation at 2,073 K, and the powder compositions was as follows: 45 wt% Si (300 mesh), 40 wt% SiC (325 mesh), 6 wt% graphite (300 mesh) and 9 wt% Al 2 O 3 (325 mesh). The preparation details were reported in [9]. After the pack cementation process, hydrothermal electrophoretic deposition was conducted.…”

Section: Methodsmentioning

confidence: 99%

Influence of MoSi2 content in suspension on the phase, microstructure and properties of hydrothermal electrophoretic deposited SiC n –MoSi2 coating for SiC pre-coated C/C composites

et al. 2011

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To protect carbon/carbon (C/C) composites from oxidation at high temperature, a nano SiC-MoSi 2 (SiC n -MoSi 2 ) coating on SiC pre-coated C/C composites was prepared by hydrothermal electrophoretic deposition. The phase composition, surface and cross-section microstructures of the prepared SiC n -MoSi 2 coating deposited with different MoSi 2 /SiC n mass ratio were characterized by X-ray diffraction (XRD), energy-dispersive spectroscopy (EDS) and scanning electron microscopy (SEM). The influence of MoSi 2 content in the hydrothermal electrophoretic deposition suspension on the phase composition, microstructure and hightemperature oxidation resistance of the multi-layer coatings were investigated. Results showed that the content of MoSi 2 phase in the prepared coating increases with the increase of MoSi 2 content in the suspension. The density and oxidation resistance of the SiC n -MoSi 2 coating improve with the increase of MoSi 2 mass content from 20 to 60 wt% in the deposition suspension. However, micro-cracks and micro-holes in the coating are found when deposited with 80 wt% MoSi 2 , and a decrease in oxidation resistance was also detected. The multi-layer coatings deposited with suspension of 60 wt% MoSi 2 exhibited the best anti-oxidation ability, which can effectively protect C/C composites from oxidation in air at 1,873 K for 90 h with weight loss of 2.08%.

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Section: Methodsmentioning

confidence: 99%

Influence of MoSi2 content in suspension on the phase, microstructure and properties of hydrothermal electrophoretic deposited SiC n –MoSi2 coating for SiC pre-coated C/C composites

et al. 2011

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“…5,6 Thermal expansion mismatch between the coating and C/ C composites will result in the crazing and debonding of the coating, and induce the failure of the coating. 7 To resolve this problem, so far, some multilayer coatings have been used, such as SiC/borosilicate glass, 8 SiC/MoSi 2 -Si-B 9 and SiC/Si-W. 10 In addition, in the authors' previous work, [11][12][13] SiC whiskers have been used to minimise the size of cracks caused by the thermal expansion mismatch between the coating and C/C composites. Recently, the advanced coatings, with a functionally gradient layer to minimise the influence of the thermal expansion mismatch, are designed to be multilayer coatings.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and oxidation resistant property of C/C composites modified by SiC–MoSi₂–CrSi₂ coating

Chu

Cao

et al. 2011

Surface Engineering

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To prevent carbon/carbon (C/C) composites from oxidation, a dense and multiphase inlaid SiCMoSi 2 -CrSi 2 coating was prepared by pack cementation. The coatings were characterised by scanning electron microscopy, energy dispersive spectroscopy and X-ray diffraction. The effect of pack composition on the oxidation properties was studied on low density C/C composite, and then optimum composition was finalised. The optimum composition was the one containing 5 wt%Cr and oxidation behaviour of high and low density C/C composites coatings with this composition was studied. Oxidation test shows that, when the Cr content was 5 wt-%, the SiCMoSi 2 -CrSi 2 coating possessed excellent oxidation resistant ability. After application of the SiCMoSi 2 -CrSi 2 multiphase coating, the low density C/C composite showed a mass loss of only 1?36% after oxidation at 1873 K for 43 h, while the mass loss of the coated high density sample was up to 7?45% after oxidation at 1873 K for 8 h.

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“…Anti-oxidation is a key requirement for carbon/carbon (C/C) composites to be used as high-temperature structural materials in an oxygen-containing environment [1][2][3]. To prevent C/C composites from oxidation, Si-Mo-Cr alloy has been extensively used as the coating material because a compound glass layer involving SiO 2 and Cr 2 O 3 would be formed, thus effectively prevent C/C composites from oxidation due to its high resistance to both volatilization and oxygen diffusion [4,5].…”

Section: Introductionmentioning

confidence: 99%

Thermal fatigue behavior of C/C composites modified by SiC–MoSi2–CrSi2 coating

Chu

et al. 2011

Journal of Alloys and Compounds

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Effects of the interface on the graphitization of a carbon fiber/pyrolytic carbon composite

Cited by 20 publications

References 8 publications

Influence of MoSi2 content in suspension on the phase, microstructure and properties of hydrothermal electrophoretic deposited SiC n –MoSi2 coating for SiC pre-coated C/C composites

Influence of MoSi2 content in suspension on the phase, microstructure and properties of hydrothermal electrophoretic deposited SiC n –MoSi2 coating for SiC pre-coated C/C composites

Microstructure and oxidation resistant property of C/C composites modified by SiC–MoSi₂–CrSi₂ coating

Thermal fatigue behavior of C/C composites modified by SiC–MoSi2–CrSi2 coating

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Effects of the interface on the graphitization of a carbon fiber/pyrolytic carbon composite

Cited by 20 publications

References 8 publications

Influence of MoSi2 content in suspension on the phase, microstructure and properties of hydrothermal electrophoretic deposited SiC n –MoSi2 coating for SiC pre-coated C/C composites

Influence of MoSi2 content in suspension on the phase, microstructure and properties of hydrothermal electrophoretic deposited SiC n –MoSi2 coating for SiC pre-coated C/C composites

Microstructure and oxidation resistant property of C/C composites modified by SiC–MoSi2–CrSi2 coating

Thermal fatigue behavior of C/C composites modified by SiC–MoSi2–CrSi2 coating

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Microstructure and oxidation resistant property of C/C composites modified by SiC–MoSi₂–CrSi₂ coating