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Thermal expansion of pyrolytic carbon with various textures
Zhang, W.1,3; Li, A.1,4; Reznik, B.1; Deutschmann, O.1,2
AbstractThermal expansion of differently-textured pyrolytic carbon matrices (pyrocarbons) of carbon/carbon composites was studied with a high temperature X-ray diffraction at temperatures ranging from 25 degrees C to 1400 degrees C. The composites were synthesized by chemical vapor infiltration of a carbon fiber felt, using methane as a carbon source. From the linear dependence of the lattice displacement on temperature, coefficients of thermal expansion (CTE) of the pyrocarbons were calculated. One-dimensional thermal expansion along the (002)-direction (c-axis) of the pyrocarbons was found to be proportional to the composite synthesis temperature. A correlation between CTE and pyrocarbon texture was found: low-textured pyrocarbon with an extinction angle (Ae) of 10 degrees exhibits a smaller CTE of 2.02 x 10-5 K-1, whereas high-textured pyrocarbon with an Ae of 22 degrees exhibits a considerably higher CTE of 2.65 x 10-5 K-1. However, CTE of high-textured pyrocarbon is still smaller than that of graphite, which is 2.9 x10-5 K-1.
KeywordCarbon-carbon Composites Anisotropy Thermal Expansion Chemical Vapor Deposition
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
Indexed BySCI
WOS Research AreaMathematics ; Mechanics
WOS SubjectMathematics, Applied ; Mechanics
WOS IDWOS:000318300000008
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Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.KIT, Inst Chem Technol & Polymer Chem, D-76131 Karlsruhe, Germany
2.KIT, Inst Catalysis Res & Technol, D-76131 Karlsruhe, Germany
3.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
4.Shanghai Univ, Composite Mat Res Ctr, Shanghai 200072, Peoples R China
Recommended Citation
GB/T 7714
Zhang, W.,Li, A.,Reznik, B.,et al. Thermal expansion of pyrolytic carbon with various textures[J]. ZAMM-ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK,2013,93(5):338-345.
APA Zhang, W.,Li, A.,Reznik, B.,&Deutschmann, O..(2013).Thermal expansion of pyrolytic carbon with various textures.ZAMM-ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK,93(5),338-345.
MLA Zhang, W.,et al."Thermal expansion of pyrolytic carbon with various textures".ZAMM-ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK 93.5(2013):338-345.
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