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Strength retention in scheelite coated SiC fibers: Effect of the gas composition and pre-heat treatment
- Source :
- Journal of the European Ceramic Society. 40:2801-2810
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- Scheelite coating was deposited on SiC fiber tows from various liquid-phase precursors at 1100℃. Strength degradation of SiC fiber was found after fiber coating which was found to be caused by the stress corrosion as a result of gases generated from the decomposition of by-products remaining in the coating. A new and simple method of low temperature pre-heat treatment was adopted to eliminate the stress corrosion in the fiber coating process and to isolate the effect of different types of gases on the stress corrosion cracking of fibers. The tensile strength and fractography of samples with and without pre-heat treatment were compared. Furthermore, the effect of gas composition on the strength degradation of SiC fiber was also investigated through the control experiments.
- Subjects :
- 010302 applied physics
Materials science
Fractography
02 engineering and technology
engineering.material
021001 nanoscience & nanotechnology
01 natural sciences
Corrosion
Stress (mechanics)
chemistry.chemical_compound
stomatognathic system
chemistry
Coating
Scheelite
0103 physical sciences
Ultimate tensile strength
Materials Chemistry
Ceramics and Composites
engineering
Gas composition
Composite material
Stress corrosion cracking
0210 nano-technology
Subjects
Details
- ISSN :
- 09552219
- Volume :
- 40
- Database :
- OpenAIRE
- Journal :
- Journal of the European Ceramic Society
- Accession number :
- edsair.doi...........f457c29c5a6e35d235bfe94aab3dd7d7
- Full Text :
- https://doi.org/10.1016/j.jeurceramsoc.2020.02.031