Improvement of Oxidation Behavior of a Ti–48Al–2Cr Alloy by a Nitridation Treatment
Abstract The effect of a nitridation treatment for 10 hr at 800°C on the oxidation resistance of a Ti–48Al–2Cr (at.%) alloy in air at 800°C was evaluated. Results prove that nitridation decreases by about 40% the total mass gain of nonnitrided material, although the oxidation mechanism is the same f...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Pérez, P. [verfasserIn] |
|---|
| Format: |
Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
2001 |
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| Anmerkung: |
© Plenum Publishing Corporation 2001 |
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| Übergeordnetes Werk: |
Enthalten in: Oxidation of metals - Kluwer Academic Publishers-Plenum Publishers, 1969, 56(2001), 3-4 vom: Okt., Seite 271-285 |
|---|---|
| Übergeordnetes Werk: |
volume:56 ; year:2001 ; number:3-4 ; month:10 ; pages:271-285 |
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| DOI / URN: |
10.1023/A:1010324828401 |
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OLC2042019763 |
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| 520 | |a Abstract The effect of a nitridation treatment for 10 hr at 800°C on the oxidation resistance of a Ti–48Al–2Cr (at.%) alloy in air at 800°C was evaluated. Results prove that nitridation decreases by about 40% the total mass gain of nonnitrided material, although the oxidation mechanism is the same for both materials. The oxidation can be divided into two stages. The formation of a nonprotective mixed alumina–rutile scale during the transient stage results in a high oxidation rate. A further decrease in the oxidation rate arises from the establishment of an external alumina-rich layer during the steady stage. The main difference between the scale developed on both materials is the continuous nature of the nitride layer present in the nitrided material during the entire exposure. The thin continuous nitride layer formed during the nitridation treatment acts beneficially as a diffusion barrier, preventing oxygen dissolution in the $ α_{2} $-$ Ti_{3} $Al phase during the transient stage. Furthermore, the oxygen gradient through the oxide scale is kept low, because no oxygen is removed at the scale–alloy interface. | ||
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10.1023/A:1010324828401 doi (DE-627)OLC2042019763 (DE-He213)A:1010324828401-p DE-627 ger DE-627 rakwb eng 540 VZ Pérez, P. verfasserin aut Improvement of Oxidation Behavior of a Ti–48Al–2Cr Alloy by a Nitridation Treatment 2001 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Plenum Publishing Corporation 2001 Abstract The effect of a nitridation treatment for 10 hr at 800°C on the oxidation resistance of a Ti–48Al–2Cr (at.%) alloy in air at 800°C was evaluated. Results prove that nitridation decreases by about 40% the total mass gain of nonnitrided material, although the oxidation mechanism is the same for both materials. The oxidation can be divided into two stages. The formation of a nonprotective mixed alumina–rutile scale during the transient stage results in a high oxidation rate. A further decrease in the oxidation rate arises from the establishment of an external alumina-rich layer during the steady stage. The main difference between the scale developed on both materials is the continuous nature of the nitride layer present in the nitrided material during the entire exposure. The thin continuous nitride layer formed during the nitridation treatment acts beneficially as a diffusion barrier, preventing oxygen dissolution in the $ α_{2} $-$ Ti_{3} $Al phase during the transient stage. Furthermore, the oxygen gradient through the oxide scale is kept low, because no oxygen is removed at the scale–alloy interface. Adeva, P. aut Enthalten in Oxidation of metals Kluwer Academic Publishers-Plenum Publishers, 1969 56(2001), 3-4 vom: Okt., Seite 271-285 Bände (DE-627)12949691X (DE-600)207479-5 (DE-576)014895706 0030-770X nnns volume:56 year:2001 number:3-4 month:10 pages:271-285 https://doi.org/10.1023/A:1010324828401 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA GBV_ILN_30 GBV_ILN_70 GBV_ILN_2006 GBV_ILN_2015 GBV_ILN_4046 GBV_ILN_4307 AR 56 2001 3-4 10 271-285 |
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10.1023/A:1010324828401 doi (DE-627)OLC2042019763 (DE-He213)A:1010324828401-p DE-627 ger DE-627 rakwb eng 540 VZ Pérez, P. verfasserin aut Improvement of Oxidation Behavior of a Ti–48Al–2Cr Alloy by a Nitridation Treatment 2001 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Plenum Publishing Corporation 2001 Abstract The effect of a nitridation treatment for 10 hr at 800°C on the oxidation resistance of a Ti–48Al–2Cr (at.%) alloy in air at 800°C was evaluated. Results prove that nitridation decreases by about 40% the total mass gain of nonnitrided material, although the oxidation mechanism is the same for both materials. The oxidation can be divided into two stages. The formation of a nonprotective mixed alumina–rutile scale during the transient stage results in a high oxidation rate. A further decrease in the oxidation rate arises from the establishment of an external alumina-rich layer during the steady stage. The main difference between the scale developed on both materials is the continuous nature of the nitride layer present in the nitrided material during the entire exposure. The thin continuous nitride layer formed during the nitridation treatment acts beneficially as a diffusion barrier, preventing oxygen dissolution in the $ α_{2} $-$ Ti_{3} $Al phase during the transient stage. Furthermore, the oxygen gradient through the oxide scale is kept low, because no oxygen is removed at the scale–alloy interface. Adeva, P. aut Enthalten in Oxidation of metals Kluwer Academic Publishers-Plenum Publishers, 1969 56(2001), 3-4 vom: Okt., Seite 271-285 Bände (DE-627)12949691X (DE-600)207479-5 (DE-576)014895706 0030-770X nnns volume:56 year:2001 number:3-4 month:10 pages:271-285 https://doi.org/10.1023/A:1010324828401 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA GBV_ILN_30 GBV_ILN_70 GBV_ILN_2006 GBV_ILN_2015 GBV_ILN_4046 GBV_ILN_4307 AR 56 2001 3-4 10 271-285 |
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10.1023/A:1010324828401 doi (DE-627)OLC2042019763 (DE-He213)A:1010324828401-p DE-627 ger DE-627 rakwb eng 540 VZ Pérez, P. verfasserin aut Improvement of Oxidation Behavior of a Ti–48Al–2Cr Alloy by a Nitridation Treatment 2001 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Plenum Publishing Corporation 2001 Abstract The effect of a nitridation treatment for 10 hr at 800°C on the oxidation resistance of a Ti–48Al–2Cr (at.%) alloy in air at 800°C was evaluated. Results prove that nitridation decreases by about 40% the total mass gain of nonnitrided material, although the oxidation mechanism is the same for both materials. The oxidation can be divided into two stages. The formation of a nonprotective mixed alumina–rutile scale during the transient stage results in a high oxidation rate. A further decrease in the oxidation rate arises from the establishment of an external alumina-rich layer during the steady stage. The main difference between the scale developed on both materials is the continuous nature of the nitride layer present in the nitrided material during the entire exposure. The thin continuous nitride layer formed during the nitridation treatment acts beneficially as a diffusion barrier, preventing oxygen dissolution in the $ α_{2} $-$ Ti_{3} $Al phase during the transient stage. Furthermore, the oxygen gradient through the oxide scale is kept low, because no oxygen is removed at the scale–alloy interface. Adeva, P. aut Enthalten in Oxidation of metals Kluwer Academic Publishers-Plenum Publishers, 1969 56(2001), 3-4 vom: Okt., Seite 271-285 Bände (DE-627)12949691X (DE-600)207479-5 (DE-576)014895706 0030-770X nnns volume:56 year:2001 number:3-4 month:10 pages:271-285 https://doi.org/10.1023/A:1010324828401 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA GBV_ILN_30 GBV_ILN_70 GBV_ILN_2006 GBV_ILN_2015 GBV_ILN_4046 GBV_ILN_4307 AR 56 2001 3-4 10 271-285 |
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10.1023/A:1010324828401 doi (DE-627)OLC2042019763 (DE-He213)A:1010324828401-p DE-627 ger DE-627 rakwb eng 540 VZ Pérez, P. verfasserin aut Improvement of Oxidation Behavior of a Ti–48Al–2Cr Alloy by a Nitridation Treatment 2001 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Plenum Publishing Corporation 2001 Abstract The effect of a nitridation treatment for 10 hr at 800°C on the oxidation resistance of a Ti–48Al–2Cr (at.%) alloy in air at 800°C was evaluated. Results prove that nitridation decreases by about 40% the total mass gain of nonnitrided material, although the oxidation mechanism is the same for both materials. The oxidation can be divided into two stages. The formation of a nonprotective mixed alumina–rutile scale during the transient stage results in a high oxidation rate. A further decrease in the oxidation rate arises from the establishment of an external alumina-rich layer during the steady stage. The main difference between the scale developed on both materials is the continuous nature of the nitride layer present in the nitrided material during the entire exposure. The thin continuous nitride layer formed during the nitridation treatment acts beneficially as a diffusion barrier, preventing oxygen dissolution in the $ α_{2} $-$ Ti_{3} $Al phase during the transient stage. Furthermore, the oxygen gradient through the oxide scale is kept low, because no oxygen is removed at the scale–alloy interface. Adeva, P. aut Enthalten in Oxidation of metals Kluwer Academic Publishers-Plenum Publishers, 1969 56(2001), 3-4 vom: Okt., Seite 271-285 Bände (DE-627)12949691X (DE-600)207479-5 (DE-576)014895706 0030-770X nnns volume:56 year:2001 number:3-4 month:10 pages:271-285 https://doi.org/10.1023/A:1010324828401 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA GBV_ILN_30 GBV_ILN_70 GBV_ILN_2006 GBV_ILN_2015 GBV_ILN_4046 GBV_ILN_4307 AR 56 2001 3-4 10 271-285 |
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10.1023/A:1010324828401 doi (DE-627)OLC2042019763 (DE-He213)A:1010324828401-p DE-627 ger DE-627 rakwb eng 540 VZ Pérez, P. verfasserin aut Improvement of Oxidation Behavior of a Ti–48Al–2Cr Alloy by a Nitridation Treatment 2001 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Plenum Publishing Corporation 2001 Abstract The effect of a nitridation treatment for 10 hr at 800°C on the oxidation resistance of a Ti–48Al–2Cr (at.%) alloy in air at 800°C was evaluated. Results prove that nitridation decreases by about 40% the total mass gain of nonnitrided material, although the oxidation mechanism is the same for both materials. The oxidation can be divided into two stages. The formation of a nonprotective mixed alumina–rutile scale during the transient stage results in a high oxidation rate. A further decrease in the oxidation rate arises from the establishment of an external alumina-rich layer during the steady stage. The main difference between the scale developed on both materials is the continuous nature of the nitride layer present in the nitrided material during the entire exposure. The thin continuous nitride layer formed during the nitridation treatment acts beneficially as a diffusion barrier, preventing oxygen dissolution in the $ α_{2} $-$ Ti_{3} $Al phase during the transient stage. Furthermore, the oxygen gradient through the oxide scale is kept low, because no oxygen is removed at the scale–alloy interface. Adeva, P. aut Enthalten in Oxidation of metals Kluwer Academic Publishers-Plenum Publishers, 1969 56(2001), 3-4 vom: Okt., Seite 271-285 Bände (DE-627)12949691X (DE-600)207479-5 (DE-576)014895706 0030-770X nnns volume:56 year:2001 number:3-4 month:10 pages:271-285 https://doi.org/10.1023/A:1010324828401 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA GBV_ILN_30 GBV_ILN_70 GBV_ILN_2006 GBV_ILN_2015 GBV_ILN_4046 GBV_ILN_4307 AR 56 2001 3-4 10 271-285 |
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Improvement of Oxidation Behavior of a Ti–48Al–2Cr Alloy by a Nitridation Treatment |
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Abstract The effect of a nitridation treatment for 10 hr at 800°C on the oxidation resistance of a Ti–48Al–2Cr (at.%) alloy in air at 800°C was evaluated. Results prove that nitridation decreases by about 40% the total mass gain of nonnitrided material, although the oxidation mechanism is the same for both materials. The oxidation can be divided into two stages. The formation of a nonprotective mixed alumina–rutile scale during the transient stage results in a high oxidation rate. A further decrease in the oxidation rate arises from the establishment of an external alumina-rich layer during the steady stage. The main difference between the scale developed on both materials is the continuous nature of the nitride layer present in the nitrided material during the entire exposure. The thin continuous nitride layer formed during the nitridation treatment acts beneficially as a diffusion barrier, preventing oxygen dissolution in the $ α_{2} $-$ Ti_{3} $Al phase during the transient stage. Furthermore, the oxygen gradient through the oxide scale is kept low, because no oxygen is removed at the scale–alloy interface. © Plenum Publishing Corporation 2001 |
| abstractGer |
Abstract The effect of a nitridation treatment for 10 hr at 800°C on the oxidation resistance of a Ti–48Al–2Cr (at.%) alloy in air at 800°C was evaluated. Results prove that nitridation decreases by about 40% the total mass gain of nonnitrided material, although the oxidation mechanism is the same for both materials. The oxidation can be divided into two stages. The formation of a nonprotective mixed alumina–rutile scale during the transient stage results in a high oxidation rate. A further decrease in the oxidation rate arises from the establishment of an external alumina-rich layer during the steady stage. The main difference between the scale developed on both materials is the continuous nature of the nitride layer present in the nitrided material during the entire exposure. The thin continuous nitride layer formed during the nitridation treatment acts beneficially as a diffusion barrier, preventing oxygen dissolution in the $ α_{2} $-$ Ti_{3} $Al phase during the transient stage. Furthermore, the oxygen gradient through the oxide scale is kept low, because no oxygen is removed at the scale–alloy interface. © Plenum Publishing Corporation 2001 |
| abstract_unstemmed |
Abstract The effect of a nitridation treatment for 10 hr at 800°C on the oxidation resistance of a Ti–48Al–2Cr (at.%) alloy in air at 800°C was evaluated. Results prove that nitridation decreases by about 40% the total mass gain of nonnitrided material, although the oxidation mechanism is the same for both materials. The oxidation can be divided into two stages. The formation of a nonprotective mixed alumina–rutile scale during the transient stage results in a high oxidation rate. A further decrease in the oxidation rate arises from the establishment of an external alumina-rich layer during the steady stage. The main difference between the scale developed on both materials is the continuous nature of the nitride layer present in the nitrided material during the entire exposure. The thin continuous nitride layer formed during the nitridation treatment acts beneficially as a diffusion barrier, preventing oxygen dissolution in the $ α_{2} $-$ Ti_{3} $Al phase during the transient stage. Furthermore, the oxygen gradient through the oxide scale is kept low, because no oxygen is removed at the scale–alloy interface. © Plenum Publishing Corporation 2001 |
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Improvement of Oxidation Behavior of a Ti–48Al–2Cr Alloy by a Nitridation Treatment |
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