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Fabrication of Ceramic-Metal Composites by Melt Infiltration of Moso-Bamboo-Derived Porous SiC

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Abstract:

Copper and 2024 aluminum alloy were melt-infiltrated into porous β-SiC to form SiC/Cu and SiC/Al composites. The porous β-SiC was prepared using Moso bamboo as the bio-template and had structural characteristics of bamboo. The Cu infiltration occurred as low as 1100°C and became significant at 1200°C. After infiltration at 1300°C for 4 h, there was still ~5 % of residual porosity. For the composites with low degree of metal infiltration, the samples fractured like the bamboo-structured porous SiC. For the composites with high degree of infiltration, the sample behaved like monolithic copper. In the infiltration of Al alloy, infiltration occurred at 900°C. Higher Infiltration temperatures would result in significant formation of Al4C3, which gradually decomposed in air.

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Periodical:

Key Engineering Materials (Volume 351)

Pages:

37-42

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.351.37

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Online since:

October 2007

Authors:

Yung Jen Lin, Shi Yi Lin

Keywords:

Bamboo-Derived Ceramic, Ceramic-Metal Composite, Melt Infiltration, SiC/Al Composite, SiC/Cu Composite, Silicon Carbide (SiC)

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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