Preparation and properties of carbon fiber-reinforced carbon and ceramic composites through a combination of chemical vapor infiltration and polymer impregnation pyrolysis

Carbon ◽  
2015 ◽  
Vol 85 ◽  
pp. 447 ◽  
Author(s):  
Hai-peng Qiu ◽  
Ming-wei Chen ◽  
Xiu-qian Li ◽  
Yu Wang ◽  
Wei-jie Xie
Keyword(s):  
Carbon Fiber ◽  
Chemical Vapor ◽  
Ceramic Composites ◽  
Chemical Vapor Infiltration ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced ◽  
Polymer Impregnation ◽  
Vapor Infiltration

scholarly journals Oxidation behaviors of carbon fiber reinforced multilayer SiC-Si3N4 matrix composites

2022 ◽  
Vol 11 (2) ◽  
pp. 354-364
Author(s):  
Xiaolin Dang ◽  
Donglin Zhao ◽  
Tong Guo ◽  
Xiaomeng Fan ◽  
Jimei Xue ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Oxidation Resistance ◽  
Chemical Vapor ◽  
Local Stress ◽  
Chemical Vapor Infiltration ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced ◽  
Si3n4 Matrix ◽  
Oxidation Behaviors

AbstractOxidation behaviors of carbon fiber reinforced SiC matrix composites (C/SiC) are one of the most noteworthy properties. For C/SiC, the oxidation behavior was controlled by matrix microcracks caused by the mismatch of coefficients of thermal expansion (CTEs) and elastic modulus between carbon fiber and SiC matrix. In order to improve the oxidation resistance, multilayer SiC-Si3N4 matrices were fabricated by chemical vapor infiltration (CVI) to alleviate the above two kinds of mismatch and change the local stress distribution. For the oxidation of C/SiC with multilayer matrices, matrix microcracks would be deflected at the transition layer between different layers of multilayer SiC-Si3N4 matrix to lengthen the oxygen diffusion channels, thereby improving the oxidation resistance of C/SiC, especially at 800 and 1000 °C. The strength retention ratio was increased from 61.9% (C/SiC-SiC/SiC) to 75.7% (C/SiC-Si3N4/SiC/SiC) and 67.8% (C/SiC-SiC/Si3N4/SiC) after oxidation at 800 °C for 10 h.

Preparation and Assessment of C/C-ZrB2-SiC Ultra-High Temperature Ceramics

2012 ◽  
Vol 512-515 ◽  
pp. 719-722 ◽  
Author(s):  
Jie Fan ◽  
Chang Ling Zhou ◽  
Chong Hai Wang ◽  
Yan Yan Wang ◽  
Rui Xiang Liu
Keyword(s):  
High Temperature ◽  
Carbon Fiber ◽  
Thermal Protection ◽  
Chemical Vapor ◽  
Pyrolytic Carbon ◽  
Composite Ceramic ◽  
Chemical Vapor Infiltration ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced ◽  
Ultra High Temperature

With the background of thermal protection applications of anti-oxidation carbon fiber reinforced composites, carbon fiber reinforced ultra-high temperatureceramics with homogeneous disperse complex matrix of C-ZrB2-SiC (C/C-ZrB2-SiC) was prepared. Carbon fiber performs were deposited with pyrolytic carbon by chemical vapor infiltration method. Subsequently, the composite precursors were prepared by completely mutually dissolving of ZrB2 polymeric precursor and polycarbosilane dimethylbenzene solution. Then the nano-dispersed ZrB2-SiC composite ceramic was introduced into the C/C preforms by polymer impregnant and pyrolysis process. The C/C-ZrB2-SiC composite shows excellent ablation behavior with the ablating rate of 8*10-4mm/s. The microstructural and compositional characterizations of the C/C-ZrB2-SiC composites indicates that ZrB2 nanoparticle is distributed homogeneously in the continuous SiC phase, which is beneficial to enhance ultra-high temperature ablation resistance of the composites.

Fabrication and Characteristics of Carbon Fiber Reinforced C–SiC Dual Matrix Composites

2007 ◽  
Vol 334-335 ◽  
pp. 145-148 ◽  
Author(s):  
Dong Mei Zhu ◽  
Fa Luo ◽  
Hong Na Du ◽  
Wan Cheng Zhou
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Chemical Vapor ◽  
Chemical Vapor Infiltration ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Final Density ◽  
Carbon Fiber Reinforced ◽  
Sic Composites ◽  
Xylene Solution

A series of carbon fiber reinforced C-SiC dual matrix composites (C/C-SiC composites) were developed through precursor infiltration of polycarbosilane (PCS) and pyrolysis (PIP), using porous C/C composites with different density from chemical vapor infiltration (CVI) as the preform. The density, mechanical properties, and microstructure of the composites were investigated and the effects of the preform density and the PCS concentration of the infiltration solution on the final density and the mechanical properties of the composites were discussed in detail. The results show that the final density of the C/C-SiC composites prepared at the infiltration concentration of 50% is the highest, indicating that 50% is the proper PCS concentration of the PCS/ Xylene solution to prepare the C/C-SiC composites. The final densities of C/C-SiC composites were closely related to the preform density and the highest final density corresponds to the highest original preform density. For the composites prepared using infiltration solution of 50% PCS, the C/C-SiC composite whose preform density is 1.23 g/cm3 possesses the best mechanical properties while that whose preform density is 1.49 g/cm3 the worst mechanical properties.

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