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Use of Zr–Ti Alloy Melt Infiltration for Fabricating Carbon-Fiber-Reinforced Ultrahigh-Temperature Ceramic Matrix Composites
- Source :
- Journal of Composites Science, Vol 5, Iss 186, p 186 (2021), Journal of Composites Science, Volume 5, Issue 7
- Publication Year :
- 2021
- Publisher :
- MDPI AG, 2021.
-
Abstract
- Carbon-fiber-reinforced ultrahigh-temperature ceramic (C/UHTC) matrix composites are an attractive candidate for fabricating various hot structures. The present study aimed to establish a Si-free Zr–Ti melt-infiltration method for fabricating C/UHTC matrix composites. To achieve this, the wettability of Zr–Ti alloys on carbon and their reactivity to carbon were examined. The alloys were melted on graphite plates and infiltrated into model preforms, which were made of porous carbon and had median pore diameters of 3 μm. The results showed that the apparent contact angle between Zr–Ti and C measured from melted alloys on carbon in room temperature was ~20–42° and that the alloys infiltrated into the preforms regardless of the Zr or Ti content. However, with an increase in the Zr content in the alloys, carbon disappeared and was absorbed into the alloys since the reactivity of Zr was higher than that of Ti and the specific surface area of the porous preform was higher than that of carbon-fiber-reinforced carbon composites, which are a typical preform of C/UHTC matrix composites. These results clearly indicate that not only the capillary flow during infiltration but also the reactivity of alloys to preforms should be considered in the process design for fabricating high-density composites via Zr–Ti infiltration.
- Subjects :
- Technology
Materials science
Science
Alloy
02 engineering and technology
engineering.material
Ceramic matrix composite
01 natural sciences
Contact angle
melt infiltration
Specific surface area
0103 physical sciences
Zr–Ti alloys
Ceramic
Graphite
Composite material
Porosity
Engineering (miscellaneous)
010302 applied physics
capillary flow
technology, industry, and agriculture
021001 nanoscience & nanotechnology
equipment and supplies
visual_art
ultrahigh-temperature ceramic composites
Ceramics and Composites
visual_art.visual_art_medium
engineering
Wetting
0210 nano-technology
Subjects
Details
- Language :
- English
- Volume :
- 5
- Issue :
- 186
- Database :
- OpenAIRE
- Journal :
- Journal of Composites Science
- Accession number :
- edsair.doi.dedup.....c2959b74fa82a913aaf0250de37c2f51