Effect of well-designed graphene heat conductive channel on the thermal conductivity of C/SiC composites

Abstract Ablation resistance as one important factor affecting the service life of SiC ceramic matrix composites that is highly valued in aerospace science and technology. In this study, high thermal conductivity (HTC) graphite films and carbon fibers reinforced C/SiC composites simultaneously, fabricating by precursor infiltration and pyrolysis (PIP) technology, to improve the ablation resistance of C/SiC composites. Three C/SiC composites were prepared from different quantity ratios of 2D fiber cloth to HTC graphite film with values of 1:0, 1:1, and 1:10. The microstructure, mechanical properties, thermal conductivity and ablation performance of C/SiC composites after plasma ablation test at 1500 °C for 600 s were investigated. The results showed that with the increase of graphite films’ contents, the thermal conductivity of composites was increased from 9.78 W/(m·K) to 333.34 W/(m·K). Additionally, the mass loss rate reduced from 1.18 to 0.74 mg/s and the linear ablation rate reduced from 0.64 to 0.18 mm/s, indicating that the addition of graphite films could effectively improve the ablation resistance of C/SiC composites.

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Effective Thermal Conductivity of MoSi2/SiC Composites

Functionally Graded Materials VIII - Materials Science Forum ◽

10.4028/0-87849-970-9.551 ◽

2005 ◽

pp. 551-554

Author(s):

Guang Zhao Bai ◽

G. Wang ◽

Wan Jiang ◽

Li Dong Chen ◽

X. Shi

Keyword(s):

Thermal Conductivity ◽

Effective Thermal Conductivity ◽

Sic Composites

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Fabrication and Properties of Cf/Ti3SiC2-SiC Composites Using Ti3SiC2 as Inert Filler

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.512-515.681 ◽

2012 ◽

Vol 512-515 ◽

pp. 681-684 ◽

Cited By ~ 7

Author(s):

Jin Shan Yang ◽

Shao Ming Dong ◽

Ping He ◽

Qing Gang Li ◽

Bin Wu ◽

...

Keyword(s):

Thermal Conductivity ◽

Bending Strength ◽

Chemical Resistance ◽

Ceramic Matrix ◽

Xrd Analysis ◽

Low Density ◽

Pyrolysis Process ◽

Sic Composites ◽

Polymer Infiltration

Because of its combined characteristics of metals and ceramics, such as low density, high Young’s modulus, thermal and chemical resistance with low hardness, high electrical and thermal conductivity, it was expected that the introduction of Ti3SiC2 to fiber reinforced ceramic matrix can make the composite own some unique properties. In the present research, Ti3SiC2 powders used as inert fillers were fabricated by the in-situ reaction between Ti and polycarbosilane mixtures. The purity of Ti3SiC2 powders analyzed by XRD was determined by RIR method, which is a semi-quantitative XRD analysis. The results showed that the purity of Ti3SiC2 powders is about 96%. Cf/Ti3SiC 2-SiC composites are obtained by polymer infiltration and pyrolysis process using Ti3SiC2 powders as the inert fillers. The bending strength of Cf/Ti3SiC2-SiC composites was about 160 MPa.

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Optimizing the transverse thermal conductivity of 2D-SiCf/SiC composites. I. Modeling

Journal of Nuclear Materials ◽

10.1016/s0022-3115(02)00951-0 ◽

2002 ◽

Vol 307-311 ◽

pp. 1112-1119 ◽

Cited By ~ 13

Author(s):

G.E. Youngblood ◽

D.J. Senor ◽

R.H. Jones

Keyword(s):

Thermal Conductivity ◽

Transverse Thermal Conductivity ◽

Sic Composites

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Effective Thermal Conductivity of MoSi2/SiC Composites

Materials Science Forum ◽

10.4028/www.scientific.net/msf.492-493.551 ◽

2005 ◽

Vol 492-493 ◽

pp. 551-554

Author(s):

Guang Zhao Bai ◽

Wan Jiang ◽

G. Wang ◽

Li Dong Chen ◽

X. Shi

Keyword(s):

Thermal Conductivity ◽

Effective Thermal Conductivity ◽

Effective Medium Theory ◽

Thermal Conductance ◽

Inclusion Size ◽

Laser Flash ◽

Flash Method ◽

Medium Theory ◽

Interfacial Thermal Conductance ◽

Sic Composites

Thermal conductivity of as-prepared MoSi2/SiC composites has been determined by Laser Flash method. Interfacial thermal conductance for composites with 100nm SiC and with 0.5µm has been determined by using effective medium theory. The results of interfacial thermal conductance exhibit that both the inclusion size and the clustering of the inclusions play an important role in determining composite thermal conductivity.

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Effect of initial density on thermal conductivity of new micro‐pipeline heat conduction C/SiC composites

Journal of the American Ceramic Society ◽

10.1111/jace.17475 ◽

2020 ◽

Vol 104 (1) ◽

pp. 645-653

Author(s):

Yunhai Zhang ◽

Yongsheng Liu ◽

Yejie Cao ◽

Liyang Cao ◽

Jing Wang ◽

...

Keyword(s):

Thermal Conductivity ◽

Heat Conduction ◽

Initial Density ◽

Sic Composites

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Preparation and Thermal Properties of Pressureless Sintered AIN/SiC Composites

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.655.78 ◽

2015 ◽

Vol 655 ◽

pp. 78-81

Author(s):

Shu He Ai ◽

Yu Jun Zhang ◽

Hong Yu Gong ◽

Qi Song Li

Keyword(s):

Thermal Conductivity ◽

Mechanical Property ◽

Thermal Properties ◽

Flexural Strength ◽

Relative Density ◽

Sintering Temperature ◽

Pressureless Sintering ◽

Temperature Range ◽

Sic Composites

AlN/SiC composites with 5 wt.% Y2O3addition were fabricated by pressureless sintering at 1700-1950 oC. The influences of sintering temperature and SiC content on the relative density, mechanical property and thermal conductivity were studied. With sintering temperature increasing from 1700 oC to 1750 oC, the relative density increased significantly to about 98.0%, without evident changes from 1750 oC to 1900 oC, and then decreased slightly at 1950 oC. As SiC content increased, the flexural strength of composites sintered at 1750 oC increased firstly, and then decreased, obtaining a maximum flexural strength of 337 MPa at 20 wt.% SiC content. Meanwhile, the thermal conductivity decreased from 60 W/(m∙K) to 40 W/(m∙K) with SiC content increasing from 0 wt.% to 30 wt.%. Moreover, in the sintering temperature range from 1750 oC to 1950 oC, the thermal conductivity increased from 45 W/(m∙K) to 55 W/(m∙K) for AlN-10 wt.% SiC composites, but decreased from 40 W/(m∙K) to 36 W/(m∙K) for AlN-30 wt.% SiC composites.

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