Effects of C/N ratios on the oxidation resistance of SiCN fibers in air
Source abstract
Abstract
Abstract In this work, the high-temperature oxidation behavior of SiCN fibers with different C/N ratios in air was researched in detail. The SiCN fibers showed a diffusion-controlled oxidation process that obeys the parabolic oxidation law, with the oxidation rate decreased as the C/N ratios decreasing. Although SiCN fibers with lower C/N ratios presented rather lower oxidation rate, they showed a larger tensile strength decrement after oxidizing at high temperatures. This phenomenon was contributed to the enhanced stress concentration by the formation of rough interface between fiber interior and oxidation layer.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · MXene and MAX Phase Materials · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (24)
Show source-provided references
1. Electromagnetic properties of Si–C–N based ceramics and composites10.1179/1743280414Y.0000000037 ↗
2. Nanochannel diffusion-controlled nitridation of polycarbosilanesfor diversified SiCN fibers with interfacial gradient-SiCxNy phase and enhanced high-temperature stability10.1021/acsami.9b00828 ↗
3. Continuous SiCN fibers with interfacial SiCxNy phase as structural material for electromagnetic absorbing applications10.1021/acsami.9b06819 ↗
4. Rare earth silicate environmental barrier coating for SiC/SiC composites and Si3N4 ceramics10.1016/j.jeurceramsoc.2004.12.013 ↗
5. Silicon carbide fiber oxidation behavior in the presence of boron nitride10.1111/jace.15807 ↗
6. Thermal and mechanical stabilities of Hi-Nicalon SiC fiber under annealing and creep in various oxygen partial pressures10.1016/j.corsci.2008.08.003 ↗
7. Oxidation behavior of Hi-Nicalon SiC monofilament fibres in air and O2−H2O−Ar atmosphere10.1016/j.corsci.2011.12.019 ↗
8. Oxidation behavior of silicon nitride fibers obtained from polycarbosilane fibers via electron beam irradiation curing10.1039/C7RA09056K ↗
9. Effect of high-temperature annealing in air and N2 atmosphere on the mechanical properties of Si3N4 fibers10.1016/j.msea.2018.03.083 ↗
10. Oxidation behavior of Si3N4 fibers derived from polycarbosilane10.1016/j.corsci.2018.02.032 ↗
11. Si−C−N ceramics with a high microstructural stability elaborated from the pyrolysis of new polycarbosilazane precursors. PartⅤ: oxidation kinetics of model filaments10.1007/BF00354712 ↗
12. Oxidation behaviour of ceramic fibres from the Si−C−N−O system and related sub-systems10.1016/S0955-2219(00)00101-1 ↗
13. Effects of residual radicals on compositional and structural stability of silicon nitride fibers10.1016/j.jeurceramsoc.2017.06.035 ↗
14. Crystallization behavior of amorphous silicon carbonitride ceramics derived from organometallic precursors10.1111/j.1151-2916.2001.tb00983.x ↗
15. Phase separation of a hafnium alkoxide-modified polysilazane upon polymer-to-ceramic transformation—a case study10.1016/j.jeurceramsoc.2011.09.003 ↗
16. New insights on the high-temperature nanostructure evolution of SiOC and B-doped SiBOC polymer-derived glasses10.1021/cm071203q ↗
17. Carbon-rich SiCN ceramics derived from phenyl-containing poly(silylcarbodiimides)10.1016/j.jeurceramsoc.2009.03.026 ↗
18. Thermodynamic modeling of amorphous Si–C–N ceramics derived from polymer precursors10.1016/j.jnoncrysol.2004.08.241 ↗
19. High-temperature oxidation behavior of dense SiBCN monoliths: carbon-content dependent oxidation structure, kinetics and mechanisms10.1016/j.corsci.2017.05.013 ↗
20. Passive oxidation kinetics for glass and cristobalite formation on Hi-NicalonTM-S SiC fibers in steam10.1111/jace.15763 ↗
21. Oxidation behavior of SiCN-ZrO2 fiber prepared from alkoxide modified silazane10.1111/j.1551-2916.2004.01556.x ↗
22. The oxidation of silicon in dry oxygen, wet oxygen, and steam10.1149/1.2425807 ↗
23. Silicon carbide fiber oxidation behavior in the presence of boron nitride10.1111/jace.15807 ↗
24. NH3-assisted synthesis of microporous silicon oxycarbonitride ceramics from preceramic polymers: a combined N2 and CO2 adsorption and small angle X-ray scattering study10.1039/C4TA04233F ↗