An environmentally friendly route to prepare hierarchical carbon/carbon–SiC composites by carbothermal reduction

Zhang, Jincao; Luo, Ruiying

doi:10.1016/j.carbon.2010.08.029

Cited by 10 publications

(2 citation statements)

References 9 publications

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“…Table 1 shows the comparison of thermal conductivity of C sf /SiC multilayer composites and other similar composites at room temperature. Although the fiber amount in this work was lower than that reported in literatures [33][34][35][36][37][38][39][40][41] and short C fibers were used in this work, C sf /SiC multilayer composites demonstrated much higher thermal conductivity than C/SiC or C/C-SiC composites reinforced with PAN-based C fibers (Table 1). Moreover, it should be noted that the pitchbased C fibers usually show much higher thermal conductivity than that of PAN-based C fibers.…”

Section: Resultsmentioning

confidence: 79%

Thermophysical Properties of Short Carbon Fiber/SiC Multilayer Composites Prepared by Tape Casting and Pressureless Sintering

Yang

Biamino

Padovano

et al. 2013

Int J Applied Ceramic Tech

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Csf/SiC multilayer composites for thermal conductivity (TC) test in three directions were successively prepared by tape casting and pressureless sintering. After 1500°C/5 h oxidation treatment, short carbon fibers were oxidized which produced many pores. However, a core area, which was composed by short carbon fiber, SiC, and few SiO2, was still observed. TC properties of Csf/SiC multilayer composites were highly anisotropic. The TC was decreased with the increase in fiber amount. Csf/SiC multilayer composites demonstrated the highest TC along the tape casting direction and the lowest TC through the thickness direction, which is favorable for thermal protection purpose.

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Section: Resultsmentioning

confidence: 79%

Thermophysical Properties of Short Carbon Fiber/SiC Multilayer Composites Prepared by Tape Casting and Pressureless Sintering

Yang

Biamino

Padovano

et al. 2013

Int J Applied Ceramic Tech

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“…SiO 2 sol (20% solid content by weight in this study) was prepared from the mixture of tetraethoxysilane [Si(OC 2-H 5 ) 4 , TEOS], ethyl alcohol [C 2 H 5 OH, EtOH], and distilled water [H 2 O] at a molar ratio of 1:4:4 with the addition of small amount of hydrochloric acid to obtain pH = 2.5. This is the optimal pH for increasing the gelation rate by a sol-gel process as described in the previous studies [30][31][32]. The infiltration of silica sol into rattan powder was accomplished via a vacuum-pressure method.…”

Section: Preparation Of Starting Materialsmentioning

confidence: 99%

Effect of different silicon sources on rattan-based silicon carbide ceramic prepared by one-step pyrolysis

Cui

Zheng²,

et al. 2016

J Wood Sci

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Rattan-based silicon carbide (R-SiC) ceramics, R-SiC SiO2 and R-SiC Si , were successfully prepared from silica (SiO 2 ) sol and silicon (Si) powder, respectively. The rattan powder was impregnated, respectively, with SiO 2 sol at ambient temperature and liquid melt-Si at high temperature. This was followed by one-step direct pyrolysis at 1500°C under an argon (Ar) atmosphere. The final SiC samples were analyzed using mass analysis, X-ray diffraction (XRD), X-ray fluorescence (XRF), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), energy dispersive X-ray analysis (EDAX), and nitrogen (N 2 ) physisorption techniques. Experimental results showed that the mass residual of R-SiC Si (42.56 wt%) was almost equal to R-SiC SiO2 (42.45 wt%). However, R-SiC SiO2 had a higher yield of SiC, a higher specific surface area and a more intact porous morphology preserved from the rattan biomass. In addition, some rod-like SiC whiskers and tablet-like SiC particles were found in R-SiC SiO2 . By comparison, R-SiC Si had a large amount of unreacted Si, as well as certain amount of SiC and unreacted C. Thus, it can be concluded that SiO 2 sols are more appropriate for use in preparation of SiC from rattan, whatever the porous microstructure, yield, and purity of SiC.

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Preparation and formation mechanism of C/C–SiC composites using polymer-Si slurry reactive melt infiltration

Guo

2020

Ceramics International

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An environmentally friendly route to prepare hierarchical carbon/carbon–SiC composites by carbothermal reduction

Cited by 10 publications

References 9 publications

Thermophysical Properties of Short Carbon Fiber/SiC Multilayer Composites Prepared by Tape Casting and Pressureless Sintering

Thermophysical Properties of Short Carbon Fiber/SiC Multilayer Composites Prepared by Tape Casting and Pressureless Sintering

Effect of different silicon sources on rattan-based silicon carbide ceramic prepared by one-step pyrolysis

Preparation and formation mechanism of C/C–SiC composites using polymer-Si slurry reactive melt infiltration

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