Oxidation behavior of ZrB2-xSiC composites at 1500°C under different oxygen partial pressures
Source abstract
Abstract
Abstract The oxidation behavior of zirconium boride composites with various SiC contents (0–40 vol%) at 1500 °C in air (pO 2 = 10 4 Pa) and under low pO 2 (10 –8 Pa) was investigated. Due to different oxidation kinetics calculated from the oxidation depths, the oxidized composites exhibited different layered structures. In addition, the composites of ZrB 2 -30 vol% SiC (one of the typical compositions) oxidized at 1500 °C for 10 h in air and under low pO 2 conditions were analyzed using TEM (transmission electron microscope). In air, the oxidation depth as a function of time indicated a parabolic kinetic behavior, and the ZrB 2 -40 vol% SiC composite exhibited the lowest parabolic rate constant ( k P ) of 232 μm 2 /h. Under low pO 2 , the oxidation depth as a function of time indicated a parabolic to linear transition kinetic behavior, except for monolithic ZrB 2 . The monolithic ZrB 2 exhibited the lowest parabolic rate constant ( k P ) of 811 μm 2 /h.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · MXene and MAX Phase Materials · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (22)
Show source-provided references
1. Refractory diborides of zirconium and hafnium10.1111/j.1551-2916.2007.01583.x ↗
2. Ultra high temperature ceramic composites
3. Oxidation-based materials selection for 2000°C+ hypersonic aerosurfaces: Theoretical considerations and historical experience10.1023/B:JMSC.0000041686.21788.77 ↗
4. Reactive hot pressing and oxidation behavior of Hf-based ultra-high-temperature ceramics10.1142/S0218625X10013886 ↗
5. Oxidation of ZrB2-SiC ceramics under atmosphere and reentry conditions, Refract
6. Processing and properties of ultra-high temperature ceramics for space applications10.1016/j.msea.2007.08.054 ↗
7. Improved processing, and oxidation-resistance of ZrB2 ultra-high temperature ceramics containing SiC nanodispersoids10.1016/j.msea.2007.03.002 ↗
8. Evolution of structure during the oxidation of zirconium diboride-silicon carbide in air up to 1500°C10.1016/j.jeurceramsoc.2006.10.012 ↗
9. Oxidation of zirconium diboride-silicon carbide at 1500°C at a low partial pressure of oxygen10.1111/j.1551-2916.2006.01229.x ↗
10. Effects of oxygen partial pressure and atomic oxygen on the microstructure of oxide scale of ZrB2-SiC composites at 1500°C10.1016/j.corsci.2013.03.023 ↗
11. Oxidation behavior of zirconium diboride-silicon carbide at 1800°C10.1016/j.scriptamat.2007.07.009 ↗
12. Thermodynamic analysis of ZrB2-SiC oxidation: Formation of a SiC-depleted region10.1111/j.1551-2916.2006.01329.x ↗
13. Polytypic Transformation in Silicon Carbide10.1016/0146-3535(83)90034-5 ↗
14. The oxidation behavior of ZrB2-based mixed boride10.4028/www.scientific.net/KEM.403.253 ↗
15. TEM study of the high-temperature oxidation behavior of hot-pressed ZrB2-SiC composites10.1111/jace.12246 ↗
16. Formation of oxide scales on zirconium diboride-silicon carbide composites during oxidation: Relation of subscale recession to liquid oxide flow10.1111/j.1551-2916.2008.02639.x ↗
17. ‘The ZrB2 volatility diagram’10.1111/j.1551-2916.2005.00599.x ↗
18. Initial stage of oxidation process and microstructure analysis of HfB2-20 vol.% SiC composite at 1500°C10.1016/j.scriptamat.2010.12.002 ↗
19. Oxidation behavior of zirconium diboride silicon carbide produced by the spark plasma sintering method10.1111/j.1551-2916.2009.03134.x ↗
20. Beneficial effects of an ultra-fine α-SiC incorporation on the sinterability and mechanical properties of ZrB210.1007/s00339-005-3327-9 ↗
21. Isothermal oxidation of bulk Zr2Al3C4 at 500 to 1000°C in air10.1557/JMR.2008.0042 ↗
22. In situ formation of oxidation resistant refractory coatings on SiC-reinforced ZrB2 ultra high temperature ceramics10.1111/j.1551-2916.2011.05032.x ↗