Corrosion of Al2O3/Cr and Ti2O3/Cr composites in flowing air and CO2 at 750°C
Source abstract
Abstract
Abstract Hot-pressed Al2O3/Cr and Ti2O3/Cr composites were exposed to synthetic air or CO2 at 750 °C. The Al2O3/Cr composites formed external Cr2O3 scales, and exhibited slow parabolic oxidation kinetics, in both gases. The Cr2O3 scales formed in CO2 possessed finer grains, and thickened at a faster rate, than Cr2O3 scales formed in air. The Ti2O3/Cr composites formed thick external TiO2 scales with internal oxidation zones that also contained Cr2O3 scales on subsurface Cr grains. After 20 h at 750 °C, the Ti2O3/Cr composites exhibited parabolic oxidation kinetics in both gases, although the oxidation rates were significantly higher than for the Al2O3/Cr composites.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · High-Temperature Coating Behaviors · Magnesium Oxide Properties and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (47)
Show source-provided references
1. https://www.iea.org/reports/co2-emissions-from-fuel-combustion-overview.
2. https://www.iea.org/data-and-statistics?country=WORLD&fuel=CO2%20emissions &indicator=CO2%20emissions%20by%20sector.
3. Baumert · 2005
4. Potential for concentrating solar power to provide baseload and dispatchable power10.1038/nclimate2276 ↗
5. Denholm · 2011
6. Grid flexibility and storage required to achieve very high penetration of variable renewable electricity10.1016/j.enpol.2011.01.019 ↗
7. The supercritical carbon dioxide power cycle: comparison to other advanced power cycles10.13182/NT06-A3734 ↗
8. Concentrating solar power10.1021/acs.chemrev.5b00397 ↗
9. Turbines can use CO2 to cut CO210.1126/science.aam8281 ↗
10. 2017
11. Ceramic-metal composites for heat exchangers in concentrated solar power plants10.1038/s41586-018-0593-1 ↗
12. K.H. Sandhage, A.S. Henry, Methods for manufacturing ceramic and ceramic composite components and components made thereby, U.S. Patent Appln. No. US2019/0127281A1, May, 2, 2019.
13. K.H. Sandhage, Methods of enhancing corrosion resistance of oxidisable materials and components made therefrom, U.S. Patent Appln. No. US2019/0256979A1, Aug. 22, 2019.
14. K.H. Sandhage, M.R. Caccia, Methods of manufacturing oxide/metal composite components and the components produced therefrom, U.S. Patent Appln. No. US2020/0010928A1, Jan. 9, 2020.
15. The Al-O (aluminium-oxygen) system10.1007/BF02887157 ↗
16. Thermodynamic calculation of the O-Ti system10.1007/s11669-997-0060-4 ↗
17. High-temperature crystal chemistry of Ti2O3: structural changes accompanying the semiconductor-metal transition10.1107/S0567740877006062 ↗
18. Barin · 1995
19. The Cr-O (chromium-oxygen) system10.1007/s11669-997-0072-0 ↗
20. Kinetics of the oxidation of chromium10.1149/1.2428576 ↗
21. Mechanical and thermomechanical properties of commercially pure chromium and chromium alloys10.1016/S0022-3115(01)00745-0 ↗
22. Alumina-chromium cermets by hot-pressing of nanocomposite powders10.1016/S0955-2219(98)00009-0 ↗
23. Microstructure and mechanical properties of chromium and chromium/nickel particulate reinforced alumina ceramics10.1023/A:1021000318894 ↗
24. Touloukian · 1975
25. Touloukian · 1977
26. S.D. De La Torre, corrosion behaviour of Al2O3-Cr composites
27. High-temperature oxidation of Cr-ZrO2-Al2O3 composite fabricated by mechanical alloying and spark plasma sintering10.4028/www.scientific.net/MSF.509.129 ↗
28. 2007
29. Young · 2016
30. Effect of oxide grain structure on the high-temperature oxidation of Cr10.1007/BF00611694 ↗
31. Challenges in developing oxidation-resistant chromium-based alloys for applications above 900°C10.1007/s11837-016-2079-7 ↗
32. Factors affecting isothermal oxidation of pure chromium in air10.1016/j.corsci.2017.11.006 ↗
33. Corrosion of 9Cr steel in CO2 at intermediate temperature I: mechanism of void-induced duplex oxide formation10.1007/s11085-011-9271-5 ↗
34. Diffusion of cations in chromia layers grown on iron-base alloys10.1007/BF00665632 ↗
35. Cation tracer diffusion in Cr203 and Cr203- 0.09 wt% Y20310.1111/j.1151-2916.1987.tb04910.x ↗
36. Anion transport in growing Cr2O3 and Al2O3 scales10.4028/www.scientific.net/MSF.43.207 ↗
37. The growth and structure of oxide films formed on single crystal (100) and polycrystalline Cr between 550 and 900°C10.1002/maco.19870381005 ↗
38. Penetration of protective chromia scales by carbon10.1016/j.scriptamat.2014.01.009 ↗
39. Atom probe study of impurity segregation at grain boundaries in chromia scales grown in CO2 gas10.1016/j.corsci.2017.12.024 ↗
40. The effect of CO2 pressure on chromia scale microstructure at 750°C10.1007/s11837-018-2963-4 ↗
41. Carburization of ferritic Fe–Cr alloys by low carbon activity gases10.1016/j.corsci.2011.05.013 ↗
42. Oxidation and nitridation behaviour of Cr-Si alloys in air at 1473 K
43. Effects of Fe on the oxidation/internal nitridation behavior and tensile properties of Cr and oxide dispersion ductilized Cr10.1016/j.scriptamat.2005.01.019 ↗
44. High-temperature oxidation behaviour of chromium: effect of different batches10.1023/A:1010364311913 ↗
45. Oxidation or nitridation behaviour of pure chromium and chromium alloys containing 10 mass% Ni or Fe in atmospheric heating10.2320/matertrans.47.2540 ↗
46. X-ray diffraction to study the oxidation mechanism of chromium at elevated temperatures10.4028/www.scientific.net/MSF.461-464.93 ↗
47. On the mechanism of oxidation of iron-16.4% chromium at high temperature10.1016/0010-938X(64)90026-5 ↗