High temperature characterization of reaction sintered SiC based materials
Monolithic SiC and SiC f/SiC composite materials have been fabricated by a reaction sintering process. The mechanical properties of RS-SiC f/SiC composites reinforced with Hi-Nicalon SiC fiber have been investigated at elevated temperatures, in conjunction with a detailed analysis of their microstru...
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| Published in: | Journal of nuclear materials Vol. 329; pp. 534 - 538 |
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| Main Authors: | , , , , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Elsevier B.V
01-08-2004
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | Monolithic SiC and SiC
f/SiC composite materials have been fabricated by a reaction sintering process. The mechanical properties of RS-SiC
f/SiC composites reinforced with Hi-Nicalon SiC fiber have been investigated at elevated temperatures, in conjunction with a detailed analysis of their microstructures. The effect of heat treatment on the microstructure and strength of RS-SiC material was also examined. The characterization of RS-SiC based materials was evaluated by means of SEM, EDS and three point bend test. The RS-SiC material showed an average density of 3.0 Mg/cm
3 and an average strength of about 550 MPa. However, the strength of RS-SiC material decreased with increasing heat treatment times. The RS-SiC
f/SiC composite also experienced a reduction of room temperature strength at a test temperature of 1300 °C, owing to the creation of internal defects such as matrix oxidation, interfacial debonding and fiber degradation. |
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| Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
| ISSN: | 0022-3115 1873-4820 |
| DOI: | 10.1016/j.jnucmat.2004.04.283 |