Ablation Behavior of the SiC-Coated Three-Dimensional Highly Thermal Conductive Mesophase-Pitch-Based Carbon-Fiber-Reinforced Carbon Matrix Composite under Plasma Flame

Ye, Chong; Huang, Dong; Li, Baoliu; Yang, Ping-jun; Liu, Jinshui; Wu, Haijun; Yang, Jianxiao; Li, Xuanke

doi:10.3390/ma12172723

Cited by 10 publications

(3 citation statements)

References 26 publications

(35 reference statements)

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“…At the same time, it is essential to couple the pore evolution process of the preform with these physical fields [16][17][18][19][20]. CVI deposition employed methane (CH 4 ) as the carbon source gas and nitrogen (N 2 ) for dilution and protection [21,22]. The simplified chemical reaction module was established based on the equations proposed by Li et al [23,24], and the chemical reaction kinetics process is illustrated in Figure 3.…”

Section: Multi-physics Field Modelmentioning

confidence: 99%

Modeling for the Fabrication Process of a ϕ1185 mm C/C Composite Thermal Insulation Tube in an Isothermal Chemical Vapor Infiltration Reactor

Zhou,

Zhan,

Liang

et al. 2024

Coatings

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The large-size chemical vapor infiltration (CVI) of the carbon/carbon (C/C) composite thermal insulation tube is a key component for drawing large diameter monocrystalline silicon rods. However, the CVI densification process is complex, and the cost of experiment optimization is extremely high. In this article, a multi-physics coupling simulation model was established and validated based on COMSOL Multiphysics v.5.6 software to simulate the fabrication process of an isothermal CVI process for a Φ1185 mm C/C composite thermal insulation tube. The influence of process parameters on densification was explored, and a method of optimization was proposed. Our modeling results revealed that the deposition status in areas of low densification was effectively and significantly enhanced after process optimization. At the monitoring site, the carbon density was no less than 1.08 × 103 kg·m−3, the average density of the composite-material thermal insulation tube improved by 5.7%, and the densification rate increased by 26.5%. This article effectively simulates the CVI process of large-sized C/C composite thermal insulation tubes, providing an important technical reference scheme for the preparation of large-sized C/C composite thermal insulation tubes.

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Section: Multi-physics Field Modelmentioning

confidence: 99%

Modeling for the Fabrication Process of a ϕ1185 mm C/C Composite Thermal Insulation Tube in an Isothermal Chemical Vapor Infiltration Reactor

Zhou,

Zhan,

Liang

et al. 2024

Coatings

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show abstract

“…High-temperature, highpressure, and high-velocity airflow are present in the typical service environments of carbon/carbon composites. Ablation, which is a material consumption behavior of carbon/carbon composite surfaces in service environments, is an effective protection mechanism for aircraft components [12][13][14]. The thermochemical ablation behavior of carbon/carbon composites involves the heat transfer, chemical reactions, surface recession and mass loss, which seriously affects some performance parameters of aircraft.…”

Section: Introductionmentioning

confidence: 99%

Microstructure-Based Thermochemical Ablation Model of Carbon/Carbon-Fiber Composites

et al. 2022

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The microstructure of carbon fiber–reinforced carbon-matrix composites (carbon/carbon composites) has important effects on its ablation performance. However, the traditional macro-ablation methods have underestimated the ablation recession rate and ignored the influence of microstructure. To simulate the ablation of large-sized structures while accounting for the influence of microstructure, it is necessary to modify these methods. In this work, a thermochemical ablation model for carbon/carbon composites is proposed based on the evolution behavior of their microstructure. The ablation recession rate and surface temperature predicted by this model are in good agreement with the experimental results. Through numerical analysis, we found that the ablation recession rate of the material without carbon fibers is much greater than that of the material containing carbon fibers. The ablation recession rate is influenced by the fiber orientation due to the change in thermal conductivity. The anti-ablation efficiency of carbon/carbon composites can be improved by increasing their fiber radius, radiation coefficient, specific heat capacity, interphase density, and thermal conductivity coefficient. The thermochemical ablation model provides a guide for the design of better anti-ablation carbon/carbon composites.

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“…If the fibers are now preferentially oriented in the fibrous mat, the latter as a whole will have anisotropic thermal properties [ 15 ]. The thermal conductivity of carbon fibers is also directly related to structural defects, and thus to crystallinity, porosity, heteroelements and disorder in the orientation of crystallites [ 18 , 19 , 20 ]. As the temperature of the carbon fiber production process increases, the concentration of structural defects is reduced and crystal order is improved [ 21 ], which results in increased thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Thermal Behavior of Fibrous Carbon Materials

et al. 2021

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The ability of various commercial fibrous carbon materials to withstand stress and conduct heat has been evaluated through experimental and analytical studies. The combined effects of different micro/macro-structural characteristics were discussed and compared. Large differences in mechanical behavior were observed between the different groups or subgroups of fibrous materials, due to the different types of fibers and the mechanical and/or chemical bonds between them. The application of the Mooney–Rivlin model made it possible to determine the elastic modulus of soft felts, with a few exceptions, which were studied in-depth. The possible use of two different mechanical test methods allowed a comparison of the results in terms of elastic modulus obtained under different deformation regimes. The effective thermal conductivity of the same fibrous materials was also studied and found to be much lower than that of a single carbon fiber due to the high porosity, and varied with the bulk density and the fiber organization involving more or less thermal contact resistances. The thermal conductivity of most materials is highly anisotropic, with higher values in the direction of preferential fiber orientation. Finally, the combination of compression and transient thermal conductivity measurement techniques allowed the heat conduction properties of the commercial fibrous carbons to be investigated experimentally when compressed. It was observed that thermal conductivity is strongly affected under compression, especially perpendicular to the main fiber orientation.

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Ablation Behavior of the SiC-Coated Three-Dimensional Highly Thermal Conductive Mesophase-Pitch-Based Carbon-Fiber-Reinforced Carbon Matrix Composite under Plasma Flame

Cited by 10 publications

References 26 publications

Modeling for the Fabrication Process of a ϕ1185 mm C/C Composite Thermal Insulation Tube in an Isothermal Chemical Vapor Infiltration Reactor

Modeling for the Fabrication Process of a ϕ1185 mm C/C Composite Thermal Insulation Tube in an Isothermal Chemical Vapor Infiltration Reactor

Microstructure-Based Thermochemical Ablation Model of Carbon/Carbon-Fiber Composites

Mechanical and Thermal Behavior of Fibrous Carbon Materials

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