Effect of H2O and CO2 on the oxidation behavior and durability at high temperature of ODS-FeCrAl

Sebastien Dryepondt; Aurelie Rouaix-Vande Put; Bruce A. Pint

doi:10.1007/s11085-013-9382-2

Effect of H₂O and CO₂ on the oxidation behavior and durability at high temperature of ODS-FeCrAl

Sebastien Dryepondt, Aurelie Rouaix-Vande Put, Bruce A. Pint

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

Cyclic oxidation testing was conducted on alloy MA956 and two different batches of alloy PM2000 at 1,100 and 1,200 C in different atmospheres rich in O₂, H₂O and CO₂. Compared to 1 h cycles in dry O₂, exposure in air + 10 vol.% H₂O resulted in an increase of the oxidation rate and a decrease of the time to breakaway for all alloys at 1,200 C, and a faster consumption of Al in the MA956 alloy. One hour cyclic testing in 49.25 % CO₂ + 50 % H₂O + 0.75 % O₂ had a smaller effect on the oxidation rate but led to increased formation of voids in alloy MA956, which had an impact on the alloy creep resistance. At 1,100 C, exposure in 50 % CO₂ + 50 % H₂O resulted in significant oxide spallation compared with oxidation in air, but this was not the case when 0.75 % O₂ was added to the CO₂/H ₂O mixture as a buffer. The control of impurity levels drastically improved the oxidation resistance of PM2000.

Original language	English
Pages (from-to)	627-638
Number of pages	12
Journal	Oxidation of Metals
Volume	79
Issue number	5-6
DOIs	https://doi.org/10.1007/s11085-013-9382-2
State	Published - Jun 2013

Funding

Acknowledgments The author wish to acknowledge G. Garner, T. Lowe, M. Stephens and J. Moser for assistance with the experimental work, as well as D. N. Leonard for EPMA analysis, M. Lance for stress measurement using the PSLS technique and K. Strader for the specimen porosity analysis. They also thank M. Brady, P. Tortorelli and I. Wright for reviewing the manuscript. This research was sponsored by the U.S. Department of Energy, Fossil Energy Advanced Materials Research Program.

Keywords

CO
HO
Lifetime
ODS alloys

Access to Document

10.1007/s11085-013-9382-2

Cite this

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title = "Effect of H2O and CO2 on the oxidation behavior and durability at high temperature of ODS-FeCrAl",

abstract = "Cyclic oxidation testing was conducted on alloy MA956 and two different batches of alloy PM2000 at 1,100 and 1,200 C in different atmospheres rich in O2, H2O and CO2. Compared to 1 h cycles in dry O2, exposure in air + 10 vol.% H2O resulted in an increase of the oxidation rate and a decrease of the time to breakaway for all alloys at 1,200 C, and a faster consumption of Al in the MA956 alloy. One hour cyclic testing in 49.25 % CO2 + 50 % H2O + 0.75 % O2 had a smaller effect on the oxidation rate but led to increased formation of voids in alloy MA956, which had an impact on the alloy creep resistance. At 1,100 C, exposure in 50 % CO2 + 50 % H2O resulted in significant oxide spallation compared with oxidation in air, but this was not the case when 0.75 % O2 was added to the CO2/H 2O mixture as a buffer. The control of impurity levels drastically improved the oxidation resistance of PM2000.",

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AU - Dryepondt, Sebastien

AU - Rouaix-Vande Put, Aurelie

AU - Pint, Bruce A.

PY - 2013/6

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N2 - Cyclic oxidation testing was conducted on alloy MA956 and two different batches of alloy PM2000 at 1,100 and 1,200 C in different atmospheres rich in O2, H2O and CO2. Compared to 1 h cycles in dry O2, exposure in air + 10 vol.% H2O resulted in an increase of the oxidation rate and a decrease of the time to breakaway for all alloys at 1,200 C, and a faster consumption of Al in the MA956 alloy. One hour cyclic testing in 49.25 % CO2 + 50 % H2O + 0.75 % O2 had a smaller effect on the oxidation rate but led to increased formation of voids in alloy MA956, which had an impact on the alloy creep resistance. At 1,100 C, exposure in 50 % CO2 + 50 % H2O resulted in significant oxide spallation compared with oxidation in air, but this was not the case when 0.75 % O2 was added to the CO2/H 2O mixture as a buffer. The control of impurity levels drastically improved the oxidation resistance of PM2000.

AB - Cyclic oxidation testing was conducted on alloy MA956 and two different batches of alloy PM2000 at 1,100 and 1,200 C in different atmospheres rich in O2, H2O and CO2. Compared to 1 h cycles in dry O2, exposure in air + 10 vol.% H2O resulted in an increase of the oxidation rate and a decrease of the time to breakaway for all alloys at 1,200 C, and a faster consumption of Al in the MA956 alloy. One hour cyclic testing in 49.25 % CO2 + 50 % H2O + 0.75 % O2 had a smaller effect on the oxidation rate but led to increased formation of voids in alloy MA956, which had an impact on the alloy creep resistance. At 1,100 C, exposure in 50 % CO2 + 50 % H2O resulted in significant oxide spallation compared with oxidation in air, but this was not the case when 0.75 % O2 was added to the CO2/H 2O mixture as a buffer. The control of impurity levels drastically improved the oxidation resistance of PM2000.

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