Properties of silicon carbide-reinforced graphite composites prepared by a reactive sintering method

HAN Yong-jun; LI Qing-bin; YAN Qing-zhi; TANG Rui

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HAN Yong-jun, LI Qing-bin, YAN Qing-zhi, TANG Rui. Properties of silicon carbide-reinforced graphite composites prepared by a reactive sintering method. New Carbon Mater., 2015, 30(1): 92-96.

Citation:

HAN Yong-jun, LI Qing-bin, YAN Qing-zhi, TANG Rui. Properties of silicon carbide-reinforced graphite composites prepared by a reactive sintering method. New Carbon Mater., 2015, 30(1): 92-96.

HAN Yong-jun, LI Qing-bin, YAN Qing-zhi, TANG Rui. Properties of silicon carbide-reinforced graphite composites prepared by a reactive sintering method. New Carbon Mater., 2015, 30(1): 92-96.

Citation:

HAN Yong-jun, LI Qing-bin, YAN Qing-zhi, TANG Rui. Properties of silicon carbide-reinforced graphite composites prepared by a reactive sintering method. New Carbon Mater., 2015, 30(1): 92-96.

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Properties of silicon carbide-reinforced graphite composites prepared by a reactive sintering method

1.
Institute of Special Ceramics and Powder Metallurgy, University of Science and Technology Beijing, Beijing 100083, China;
2.
School of Chemistry and Chemical Engineering, Pingdingshan University, Pingdingshan 467000, China;
3.
Science and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu 610041, China

Funds: National Natural Science Foundation of China (U1134102).

Received Date: 2014-10-10
Accepted Date: 2015-02-13
Rev Recd Date: 2015-01-22
Publish Date: 2015-02-28

Abstract

Abstract

Silicon carbide-reinforced graphite composites were prepared by hot-pressing mixtures of flake graphite and Si powder with various mass ratios under vacuum. The microstructure and phase compositions were characterized by SEM and XRD. Results indicated that SiC, resulting from the reaction between graphite and silicon, was uniformly dispersed in the graphite matrix. The bend strength of the composites increased from 112 to 206 MPa with increasing silicon content from 28.06 to 37.94 mass%. The oxidation resistance of the composites increased with their silicon content. The coefficient of friction of the composites remainedat a low constant value of about 0.1 when the Si content was below 31.46 mass%.
- Graphite composite,
- Reactive sintering,
- SiC particle reinforced,
- Friction coefficient

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References(20)

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