Effect of Processing Condition on the Microstructure and Mechanical Properties of Ti3SiC2/SiC Composites

Abstract:

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Ti3SiC2/SiC composites were fabricated by reactive hot pressing method. Effect of processing condition on the microstructure and mechanical properties of the composites were investigated. The results showed that: (1) Hot-pressing temperature influenced the phase constituent of Ti3SiC2/SiC composites. The flexural strength and fracture toughness of composites increased with hot pressing temperature. (2) The flexural strength and fracture toughness of composites increased when the content of SiC was increased. When the SiC content was 30wt% the flexural strength and fracture toughness of Ti3SiC2/SiC composite were 371MPa and 6.9MPa•m1/2 respectively. However, when the content of SiC reached 50wt%, the flexural strength and fracture toughness of composites decreased due to high porosity in the composites. (3) The flexural strength and fracture toughness of composites increased with the particle size of SiC added in composites. (4) Ti3SiC2/SiC composites were non-brittle at room temperature.

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Periodical:

Edited by:

Hyungsun Kim, JianFeng Yang, Tohru Sekino, Masakazu Anpo and Soo Wohn Lee

Pages:

352-355

DOI:

10.4028/www.scientific.net/MSF.658.352

Citation:

H. F. Yin and L. L. Lu, "Effect of Processing Condition on the Microstructure and Mechanical Properties of Ti3SiC2/SiC Composites", Materials Science Forum, Vol. 658, pp. 352-355, 2010

Online since:

July 2010

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$35.00

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