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Influence of Oxidizing Atmosphere on the Oxidation of Ni-based Superalloy Rene 65.

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Title: Influence of Oxidizing Atmosphere on the Oxidation of Ni-based Superalloy Rene 65.
Authors: Huguet, M.1 (AUTHOR) martin.huguet@univ-lr.fr, Boissonnet, G.1 (AUTHOR), Bonnet, G.1 (AUTHOR), Pedraza, F.1 (AUTHOR)
Source: High Temperature Corrosion of Materials. Oct2024, Vol. 101 Issue 5, p1131-1141. 11p.
Subjects: Forging (Manufacturing process), Oxidation of water, Oxidation kinetics, Water vapor, Partial pressure
Abstract: The influence of oxidizing atmosphere on the degradation mechanisms of the Ni-based superalloy Rene 65 was studied in this work. Oxidation was carried out in synthetic air, argon and water vapor (Ar + 18 vol.%H2O) between 700 and 900 °C, with samples built following additive manufacturing and forging processing routes. The results showed that the processing route and hence, the derived microstructure did not significantly affect the oxidation behavior. In contrast, the oxidizing atmosphere markedly modified the oxidation kinetics, the growth of the oxide layers and the overall oxidation mechanisms. The resulting thin oxide scales were made of NiCr2O4 and Cr2O3 at 700 °C, while at 800 and 900 °C the oxide layer was composed of an external Cr2O3 layer on top of an internal α-Al2O3 layer resulting from the lower partial pressure of oxygen underneath the chromia layer. The presence of nitrogen in the synthetic air favored the internal formation of TiN, while the absence of nitrogen in argon revealed the doping effect of Ti on the formation of the Cr2O3 layer. The effect of water vapor in Ar was not significant as the oxidation behavior was close to that observed under argon. [ABSTRACT FROM AUTHOR]
Copyright of High Temperature Corrosion of Materials is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
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  Data: Influence of Oxidizing Atmosphere on the Oxidation of Ni-based Superalloy Rene 65.
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  Data: <searchLink fieldCode="JN" term="%22High+Temperature+Corrosion+of+Materials%22">High Temperature Corrosion of Materials</searchLink>. Oct2024, Vol. 101 Issue 5, p1131-1141. 11p.
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  Data: The influence of oxidizing atmosphere on the degradation mechanisms of the Ni-based superalloy Rene 65 was studied in this work. Oxidation was carried out in synthetic air, argon and water vapor (Ar + 18 vol.%H2O) between 700 and 900 °C, with samples built following additive manufacturing and forging processing routes. The results showed that the processing route and hence, the derived microstructure did not significantly affect the oxidation behavior. In contrast, the oxidizing atmosphere markedly modified the oxidation kinetics, the growth of the oxide layers and the overall oxidation mechanisms. The resulting thin oxide scales were made of NiCr2O4 and Cr2O3 at 700 °C, while at 800 and 900 °C the oxide layer was composed of an external Cr2O3 layer on top of an internal α-Al2O3 layer resulting from the lower partial pressure of oxygen underneath the chromia layer. The presence of nitrogen in the synthetic air favored the internal formation of TiN, while the absence of nitrogen in argon revealed the doping effect of Ti on the formation of the Cr2O3 layer. The effect of water vapor in Ar was not significant as the oxidation behavior was close to that observed under argon. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of High Temperature Corrosion of Materials is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s11085-024-10278-3
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        Text: English
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        Type: general
      – SubjectFull: Oxidation of water
        Type: general
      – SubjectFull: Oxidation kinetics
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      – SubjectFull: Water vapor
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              Text: Oct2024
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