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A hot-pressing reaction technique for SiC coating of carbon/carbon composites
- Source :
-
Ceramics International . May2010, Vol. 36 Issue 4, p1463-1466. 4p. - Publication Year :
- 2010
-
Abstract
- Abstract: A hot-pressing reactive sintering (HPRS) technique was explored to prepare SiC coating for protecting carbon/carbon (C/C) composites against oxidation. The microstructures of the coatings were analyzed by X-ray diffraction and scanning electron microscopy. The results show that, SiC coating obtained by HPRS has a dense and crack-free structure, and the coated C/C lost mass by only 1.84wt.% after thermal cycles between 1773K and room temperature for 15 times. The flexural strength of the HPRS-SiC coated C/C is up to 140MPa, higher than those of the bare C/C and the C/C with a SiC coating by pressure-less reactive sintering. The fracture mode of the C/C composites changes from a pseudo-plastic behavior to a brittle one after being coated with a HPRS-SiC coating. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 36
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 50261161
- Full Text :
- https://doi.org/10.1016/j.ceramint.2010.01.002