Corrosion of Al2O3/Cr and Ti2O3/Cr composites in flowing air and CO2 at 750°C
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.
- Authors:
-
- Purdue Univ., West Lafayette, IN (United States). School of Materials Engineering
- Publication Date:
- Research Org.:
- Purdue Univ., West Lafayette, IN (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
- OSTI Identifier:
- 1848831
- Alternate Identifier(s):
- OSTI ID: 1775707
- Grant/Contract Number:
- EE0008527
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Corrosion Science
- Additional Journal Information:
- Journal Volume: 179; Journal Issue: C; Journal ID: ISSN 0010-938X
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 42 ENGINEERING; Materials Science; Metallurgy & Metallurgical Engineering; A. Ceramic matrix composites; B. SEM; B. TEM; C. High temperature corrosion; C. Oxidation; C. Kinetic parameters
Citation Formats
Nguyen, Thuan Dinh, Caccia, Mario, McCormack, Camilla K., Itskos, Grigorios, and Sandhage, Kenneth H. Corrosion of Al2O3/Cr and Ti2O3/Cr composites in flowing air and CO2 at 750°C. United States: N. p., 2020.
Web. doi:10.1016/j.corsci.2020.109115.
Nguyen, Thuan Dinh, Caccia, Mario, McCormack, Camilla K., Itskos, Grigorios, & Sandhage, Kenneth H. Corrosion of Al2O3/Cr and Ti2O3/Cr composites in flowing air and CO2 at 750°C. United States. https://doi.org/10.1016/j.corsci.2020.109115
Nguyen, Thuan Dinh, Caccia, Mario, McCormack, Camilla K., Itskos, Grigorios, and Sandhage, Kenneth H. Fri .
"Corrosion of Al2O3/Cr and Ti2O3/Cr composites in flowing air and CO2 at 750°C". United States. https://doi.org/10.1016/j.corsci.2020.109115. https://www.osti.gov/servlets/purl/1848831.
@article{osti_1848831,
title = {Corrosion of Al2O3/Cr and Ti2O3/Cr composites in flowing air and CO2 at 750°C},
author = {Nguyen, Thuan Dinh and Caccia, Mario and McCormack, Camilla K. and Itskos, Grigorios and Sandhage, Kenneth H.},
abstractNote = {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.},
doi = {10.1016/j.corsci.2020.109115},
journal = {Corrosion Science},
number = C,
volume = 179,
place = {United States},
year = {Fri Nov 13 00:00:00 EST 2020},
month = {Fri Nov 13 00:00:00 EST 2020}
}
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