Effect of pyrolytic carbon texture on ablation behavior of carbon/carbon composites coated with SiC by pack cementation

The morphologies and textures of the pyrolytic carbon matrix in 2D-C/C composites after graphitization were investigated by means of polarized light microscope (PLM) and high resolution transmission electron microscope (HRTEM). The microstructure parameters of the pyrolytic carbon matrix before and after graphitization were characterized with X-ray diffraction (XRD) technology. It was found that the interplanar distance of (002) planes (d002) of pyrolytic carbon matrix decreases, and the microcrystalline stack height (LC) increases after graphitization. Graphitization treatment resulted in a coarsening of the surface texture and in the formation of circumferential cracks within the matrix. The lattice fringes of the pyrolytic carbon matrix are continuous and longer in each domain and the (002) peak spot is smaller and more intense after graphitization.

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Tribological properties of carbon/carbon composites with various pyrolytic carbon microstructures

Wear ◽

10.1016/j.wear.2013.04.031 ◽

2013 ◽

Vol 304 (1-2) ◽

pp. 103-108 ◽

Cited By ~ 18

Author(s):

Shu Yu ◽

Fuqing Zhang ◽

Xiang Xiong ◽

Yunping Li ◽

Ning Tang ◽

...

Keyword(s):

Tribological Properties ◽

Pyrolytic Carbon ◽

Carbon Composites

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THE INFLUENCE OF SiC COATING PROCESS ON THE PROPERTIES OF C/C COMPOSITES

Surface Review and Letters ◽

10.1142/s0218625x07010317 ◽

2007 ◽

Vol 14 (04) ◽

pp. 817-820

Author(s):

MIN HUANG ◽

KE-ZHI LI ◽

HE-JUN LI ◽

QIAN-GANG FU ◽

GUO-DONG SUN

Keyword(s):

Mechanical Properties ◽

Flexural Strength ◽

Failure Mode ◽

Flexural Modulus ◽

Pack Cementation ◽

Bending Test ◽

Carbon Composites ◽

Coating Process ◽

Three Point Bending ◽

Coated Carbon

SiC coating for carbon/carbon composites was prepared by pack cementation method. The effects of coating process on the microstructure and the mechanical properties of C / C composites were analyzed by SEM and three-point bending test, respectively. As the infiltrated Si improved the interfaces bonding during the coating process, the flexural strength and flexural modulus of SiC -coated carbon/carbon composites were both increased by about 10% than the naked C / C composites. In addition, the mechanism of the change of failure mode of SiC coated C / C composites and naked C / C composites was addressed.

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Kinetics of pyrolytic carbon infiltration for the preparation of ceramic/carbon and carbon/carbon composites

Carbon ◽

10.1016/j.carbon.2004.01.028 ◽

2004 ◽

Vol 42 (7) ◽

pp. 1285-1290 ◽

Cited By ~ 10

Author(s):

J.M. Rosas ◽

J. Bedia-Matamoros ◽

J. Rodrı́guez-Mirasol ◽

T. Cordero

Keyword(s):

Pyrolytic Carbon ◽

Carbon Composites ◽

Kinetics Of

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