Space optical payloads, new application area for high temperature composites 1 1Paper IAF-96-I.3.02 presented at the 47th International Astronautical Congress, Beijing, China, 7–11 October 1996.

Capdepuy, B.; Leleu, Frederic; Boursereau, F.; Parrot, Pierre; Bailly, Bryden Le; Riti, Jean-Bernard; Cornu, J.L

doi:10.1016/s0094-5765(97)00192-6

Cited by 4 publications

(6 citation statements)

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“…5. In the sample obtained from preform density of 1.2 g/cm 3 , there are high amount of fibers pulled out, which are longer than those pulled out in the sample from preform density of 1.49 g/cm 3 . It indicates that the bonding of the fibers and the matrix in the sample from preform density of 1.23 g/cm 3 is good enough that the interface could transfer the load and the fiber could withstand the load effectively, therefore, the sample from preform density of 1.23 g/cm 3 possesses the best mechanical…”

Section: Resultsmentioning

confidence: 86%

“…It is obvious that both the shear strength and the fracture toughness decrease with the increase of preform density. The flexural strength was improved visibly as the preform density increase and reaches the 204.1 MPa when the preform density is 1.23 g/cm 3 , and then decrease sharply with the increase of the preform density. It can be concluded from the Figs.…”

Section: Resultsmentioning

confidence: 94%

“…The porous C/C composites with different density were prepared using chemical vapor infiltration (CVI) route as the preform, whose densities are 0.82, 1.01, 1.23, and 1.49g/cm 3 , respectively. The PCS with the average molecular weight of 1500 and softening point of 170~180 o C was used as the precursor to SiC ceramics and the Xylene as solvent and cross-linking reagent for PCS.…”

Section: Methodsmentioning

confidence: 99%

“…C/C composites are interesting materials for an increasing number of applications in the aerospace industry due to its obvious advantages [1][2][3] such as low density, low thermal expansion coefficient, extremely high-temperature withstanding, and good wear resistance. On the other hand, its tendency to oxidation in high-temperature requires additional oxidation production in oxidizing atmospheres.…”

Section: Introductionmentioning

confidence: 99%

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

Zhu

Luo

et al. 2007

KEM

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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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Section: Resultsmentioning

confidence: 86%

Section: Resultsmentioning

confidence: 94%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Zhu

Luo

et al. 2007

KEM

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“…In many years, the C/C composites are considered the interesting materials for the aerospace application due to its obvious advantages [1][2] such as low density, low thermal expansion coefficient, extremely high-temperature withstanding, and good wear resistance. On the other hand, its tendency to oxidation in high-temperature requires additional oxidation production in oxidizing atmospheres.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Mechanical Properties of C/C-SiC Composites

Zhu

Luo

et al. 2007

MSF

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Porous C/C composite with certain porosity prepared by Chemical vapor infiltration (CVI) was chosen as the preforms to develop the C/C-SiC composites through precursor infiltration and pyrolysis(PIP), using PCS (polycarbosilane) as the precursor and divinylbenzene as solvent and cross-linking reagent for PCS. The effect of the infiltration solution with different PCS/DVB ratio on the final density, microstructure, and mechanical properties of composites was investigated and the proper PCS/DVB ratio to prepare the C/C-SiC composites was suggested. The experimental results showed that the final densities and the mechanical properties of the composites were close related to the PCS/DVB ratio. Higher PCS/DVB ratio resulted in higher final density and better mechanical properties, but not the highest PCS/DVB ratio could get the best mechanical properties. The main reason is that too high PCS/DVB ratio will make the infiltration process become difficult and lead to the formation of lots of pores in the final composite, at last lowers the mechanical properties. It is believed that the 50% PCS content is proper to prepare the C/C-SiC composites. The composite from 50% PCS infiltration solution could get the final density of1.696g/cm3, the flexural strength of 171Mpa, and shearing strength of 21.6Mpa, which are the best mechanical results among the obtained materials.

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