Effect of Water Vapor on Lifetime of 625 and 120 Foils During Oxidation Between 650 and 800 °C

M. Romedenne; R. Pillai; S. Dryepondt; B. A. Pint

doi:10.1007/s11085-021-10069-0

Effect of Water Vapor on Lifetime of 625 and 120 Foils During Oxidation Between 650 and 800 °C

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Abstract

The oxidation behavior of alloy 625 and 120 foils was studied at 650, 700 and 800 ^∘C in dry air and flowing air + 10% H₂O up to 10,000 h (alloy 625) or 30,000 h (alloy 120). The effect of water vapor on Cr loss was investigated. Manganese and iron in the 120 foil induced faster Cr depletion in the foil and breakdown of the Cr₂O₃ scale into Fe and Cr-rich oxide compared to the alloy 625 foil. In the latter case, the presence of Nb led to the formation of Nb and Cr-rich oxide after breakdown of the Cr₂O₃ scale. Simultaneous Cr loss due to oxidation and volatilization of the Cr₂O₃ oxide scale was predicted and compared to experimental Cr loss measurements for exposures up to 30,000 h.

Original language	English
Pages (from-to)	589-612
Number of pages	24
Journal	Oxidation of Metals
Volume	96
Issue number	5-6
DOIs	https://doi.org/10.1007/s11085-021-10069-0
State	Published - Dec 2021

Funding

This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ). The author would like to thank G. W. Garner, M. S. Stephens, T. Lowe, V. Cox at ORNL for their assistance with the experimental work and P. F. Tortorelli and M. Brady for their valuable comments on the manuscript. This research was sponsored by the U. S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Combined Heat and Power Program. The author would like to thank G. W. Garner, M. S. Stephens, T. Lowe, V. Cox at ORNL for their assistance with the experimental work and P. F. Tortorelli and M. Brady for their valuable comments on the manuscript. This research was sponsored by the U. S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Combined Heat and Power Program.

Keywords

Foil oxidation
Lifetime
Microturbine
Modeling
Water vapor

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title = "Effect of Water Vapor on Lifetime of 625 and 120 Foils During Oxidation Between 650 and 800 °C",

abstract = "The oxidation behavior of alloy 625 and 120 foils was studied at 650, 700 and 800 ∘C in dry air and flowing air + 10\% H2O up to 10,000 h (alloy 625) or 30,000 h (alloy 120). The effect of water vapor on Cr loss was investigated. Manganese and iron in the 120 foil induced faster Cr depletion in the foil and breakdown of the Cr2O3 scale into Fe and Cr-rich oxide compared to the alloy 625 foil. In the latter case, the presence of Nb led to the formation of Nb and Cr-rich oxide after breakdown of the Cr2O3 scale. Simultaneous Cr loss due to oxidation and volatilization of the Cr2O3 oxide scale was predicted and compared to experimental Cr loss measurements for exposures up to 30,000 h.",

keywords = "Foil oxidation, Lifetime, Microturbine, Modeling, Water vapor",

author = "M. Romedenne and R. Pillai and S. Dryepondt and Pint, \{B. A.\}",

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T1 - Effect of Water Vapor on Lifetime of 625 and 120 Foils During Oxidation Between 650 and 800 °C

AU - Romedenne, M.

AU - Pillai, R.

AU - Dryepondt, S.

AU - Pint, B. A.

PY - 2021/12

Y1 - 2021/12

N2 - The oxidation behavior of alloy 625 and 120 foils was studied at 650, 700 and 800 ∘C in dry air and flowing air + 10% H2O up to 10,000 h (alloy 625) or 30,000 h (alloy 120). The effect of water vapor on Cr loss was investigated. Manganese and iron in the 120 foil induced faster Cr depletion in the foil and breakdown of the Cr2O3 scale into Fe and Cr-rich oxide compared to the alloy 625 foil. In the latter case, the presence of Nb led to the formation of Nb and Cr-rich oxide after breakdown of the Cr2O3 scale. Simultaneous Cr loss due to oxidation and volatilization of the Cr2O3 oxide scale was predicted and compared to experimental Cr loss measurements for exposures up to 30,000 h.

AB - The oxidation behavior of alloy 625 and 120 foils was studied at 650, 700 and 800 ∘C in dry air and flowing air + 10% H2O up to 10,000 h (alloy 625) or 30,000 h (alloy 120). The effect of water vapor on Cr loss was investigated. Manganese and iron in the 120 foil induced faster Cr depletion in the foil and breakdown of the Cr2O3 scale into Fe and Cr-rich oxide compared to the alloy 625 foil. In the latter case, the presence of Nb led to the formation of Nb and Cr-rich oxide after breakdown of the Cr2O3 scale. Simultaneous Cr loss due to oxidation and volatilization of the Cr2O3 oxide scale was predicted and compared to experimental Cr loss measurements for exposures up to 30,000 h.

KW - Foil oxidation

KW - Lifetime

KW - Microturbine

KW - Modeling

KW - Water vapor

UR - https://www.scopus.com/pages/publications/85111683816

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DO - 10.1007/s11085-021-10069-0

M3 - Article

AN - SCOPUS:85111683816

SN - 0030-770X

VL - 96

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EP - 612

JO - Oxidation of Metals

JF - Oxidation of Metals

IS - 5-6

ER -

Effect of Water Vapor on Lifetime of 625 and 120 Foils During Oxidation Between 650 and 800 °C

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