Film-forming investigation of NbC-modified HfC coating based on oxyacetylene ablation and argon-atmosphere heating above 2000 °C
Source abstract
Abstract
Ablation test of NbC-modified HfC coatings using an oxyacetylene flame and heat treatment of HfO 2–Nb 2O 5 plates up to 2100 °C were performed. The results indicate that HfC-30 mol% NbC coating forms a dense oxide film comprising HfO 2 columnar crystals, achieving the best ablation property. At 2100 °C in an argon atmosphere, the solubility of niobium suboxide in HfO 2 is in the range 27–30 mol%, and the stable phases are HfO 2, Nb, and NbO. Nb O liquids improve the transport of Hf and produce gradients of temperature and oxygen concentration, promoting the formation of a composite film under an oxyacetylene flame.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Semiconductor materials and devices · Metal and Thin Film Mechanics · Advanced ceramic materials synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (24)
Show source-provided references
1. Oxidation behavior and protection of carbon/carbon composites10.1016/0008-6223(87)90197-7 ↗
2. Oxidation of carbon/carbon composites-a theoretical analysis10.1016/0008-6223(88)90040-1 ↗
3. Hafnium carbide protective layer coatings on carbon/carbon composites deposited with a vacuum plasma spray coating method10.1016/j.jeurceramsoc.2016.01.032 ↗
4. Effects of HfC nanowire amount on the microstructure and ablation resistance of CVD-HfC coating10.1016/j.ceramint.2018.03.183 ↗
5. Ablation resistance of HfC–SiC coating prepared by supersonic atmospheric plasma spraying for SiC-coated C/C composites10.1016/j.ceramint.2015.11.161 ↗
6. Deposition and ablation resistance of HfC-based coatings prepared on SiC-coated C/C composites by supersonic atmospheric plasma spraying10.1080/17436753.2016.1193333 ↗
7. Oxidation protection for carbon fibre composites10.1007/BF00357844 ↗
8. Thermodynamics and phase stability in the Si–O system10.1016/j.jnoncrysol.2003.12.057 ↗
9. Effects of the second phase on the microstructure and ablation resistance of HfC coating on C/C composites10.1016/j.surfcoat.2018.03.023 ↗
10. In‐situ determination of the HfO2-Ta2O5-temperature phase diagram up to 3000 ℃10.1111/jace.16271 ↗
11. The O-Ta (oxygen-tantalum) system10.1007/BF02648373 ↗
12. Ablation mechanism of HfC-HfO2 protective coating for SiC-coated C/C composites in an oxyacetylene torch environment10.1016/j.jmst.2016.11.010 ↗
13. . New anti-ablation candidate for carbon/carbon composites: preparation, composition and ablation behavior of Y2Hf2O7 coating under an oxyacetylene torch10.1016/j.jeurceramsoc.2018.07.042 ↗
14. Comparing ablation properties of NbC and NbC-25 mol% ZrC coating on SiC-coated C/C composites
15. Self-healing performance of niobium suboxide-based solid solution for UHTC coating during oxyacetylene test10.1016/j.surfcoat.2021.127190 ↗
16. Structural characterization of aluminum phosphate binder10.1111/j.1151-2916.2000.tb01477.x ↗
17. Direct observations of the MOF (UiO-66) structure by transmission electron microscopy10.1039/c3ce41122b ↗
18. Silicon carbide coating to protect carbon/carbon composites against oxidation10.1016/j.scriptamat.2004.12.029 ↗
19. Multi-healing behavior of (NbC-TaC)/ZrC/SiC triple-layer coated C/C composites enduring oxyacetylene flame10.1016/j.surfcoat.2023.129255 ↗
20. High-temperature phase composition, crystal stabilisation, and interfacial diffusion of (NbC-ZrC)/SiC double-layer coated C/C composites enduring the oxyacetylene flame10.1016/j.corsci.2021.109541 ↗
21. Modeling of corrosion-induced blockages on radiation heat transfer by using RELAP5-3D10.1016/j.pnucene.2018.12.005 ↗
22. Ablation tests on HfC- and TaC-based ceramics for aeropropulsive applications10.1016/j.jeurceramsoc.2014.11.018 ↗
23. Thermodynamic modeling of the Hf–Si–O system10.1016/j.calphad.2006.08.006 ↗
24. Crystal structure solution for the A6B2O17 (A= Zr, Hf; B= Nb, Ta) superstructure10.1107/S2052520619001963 ↗