Oxidation behavior and mechanism of a Ni-based single crystal superalloy with single α-Al                         2                         O                         3                          film at 1000 °C

Haiqing Pei; Zhixun Wen; Yamin Zhang; Zhufeng Yue

doi:10.1016/j.apsusc.2017.03.116

Oxidation behavior and mechanism of a Ni-based single crystal superalloy with single α-Al ₂ O ₃ film at 1000 °C

Haiqing Pei
, Zhixun Wen
, Yamin Zhang
, Zhufeng Yue

School of Mechanics,Civil Engineering and Architecture

Northwestern Polytechnical University Xian

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

86 Scopus citations

Abstract

Detailed long-term of 2000 h oxidation behavior of a Ni-based single crystal superalloy was investigated at 1000 °C. In the first oxidation stage, α-Al ₂ O ₃ formed immediately, and then the mass gain curve obeys the parabolic law, which corresponds to the growth of α-Al ₂ O ₃ film. A single α-Al ₂ O ₃ film kept on the surface of the specimen before 750 h oxidation. The oxidation is controlled by the inward diffusion of oxygen anions to react with Al cations at the oxide/metal interface. The shape of the exfoliation region of single α-Al ₂ O ₃ film is closed to an annulus, in which the (Ni, Co)O layer formed due to depletion of Al. The three-layer oxide scale formed rapidly after 750 h oxidation. With the continue consumption of Al, a discontinuous inner α-Al ₂ O ₃ layer formed, making oxide scale spall seriously and gain mass rapidly. The states of α-Al ₂ O ₃ film, the controlled film, are different in dendrite core and interdendritic region.

Original language	English
Pages (from-to)	124-135
Number of pages	12
Journal	Applied Surface Science
Volume	411
DOIs	https://doi.org/10.1016/j.apsusc.2017.03.116
State	Published - 31 Jul 2017

Keywords

Diffusion
Ni-based single crystal superalloys
Oxidation mechanism
Single α-Al2O3 film

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10.1016/j.apsusc.2017.03.116

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Pei, H., Wen, Z., Zhang, Y., & Yue, Z. (2017). Oxidation behavior and mechanism of a Ni-based single crystal superalloy with single α-Al ₂ O ₃ film at 1000 °C Applied Surface Science, 411, 124-135. https://doi.org/10.1016/j.apsusc.2017.03.116

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title = " Oxidation behavior and mechanism of a Ni-based single crystal superalloy with single α-Al 2 O 3 film at 1000 °C ",

abstract = " Detailed long-term of 2000 h oxidation behavior of a Ni-based single crystal superalloy was investigated at 1000 °C. In the first oxidation stage, α-Al 2 O 3 formed immediately, and then the mass gain curve obeys the parabolic law, which corresponds to the growth of α-Al 2 O 3 film. A single α-Al 2 O 3 film kept on the surface of the specimen before 750 h oxidation. The oxidation is controlled by the inward diffusion of oxygen anions to react with Al cations at the oxide/metal interface. The shape of the exfoliation region of single α-Al 2 O 3 film is closed to an annulus, in which the (Ni, Co)O layer formed due to depletion of Al. The three-layer oxide scale formed rapidly after 750 h oxidation. With the continue consumption of Al, a discontinuous inner α-Al 2 O 3 layer formed, making oxide scale spall seriously and gain mass rapidly. The states of α-Al 2 O 3 film, the controlled film, are different in dendrite core and interdendritic region.",

keywords = "Diffusion, Ni-based single crystal superalloys, Oxidation mechanism, Single α-Al2O3 film",

author = "Haiqing Pei and Zhixun Wen and Yamin Zhang and Zhufeng Yue",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = jul,

day = "31",

doi = "10.1016/j.apsusc.2017.03.116",

language = "英语",

volume = "411",

pages = "124--135",

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Pei, H, Wen, Z, Zhang, Y & Yue, Z 2017, ' Oxidation behavior and mechanism of a Ni-based single crystal superalloy with single α-Al ₂ O ₃ film at 1000 °C ', Applied Surface Science, vol. 411, pp. 124-135. https://doi.org/10.1016/j.apsusc.2017.03.116

Oxidation behavior and mechanism of a Ni-based single crystal superalloy with single α-Al ₂ O ₃ film at 1000 °C . / Pei, Haiqing; Wen, Zhixun; Zhang, Yamin et al.
In: Applied Surface Science, Vol. 411, 31.07.2017, p. 124-135.

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

TY - JOUR

T1 - Oxidation behavior and mechanism of a Ni-based single crystal superalloy with single α-Al 2 O 3 film at 1000 °C

AU - Pei, Haiqing

AU - Wen, Zhixun

AU - Zhang, Yamin

AU - Yue, Zhufeng

PY - 2017/7/31

Y1 - 2017/7/31

N2 - Detailed long-term of 2000 h oxidation behavior of a Ni-based single crystal superalloy was investigated at 1000 °C. In the first oxidation stage, α-Al 2 O 3 formed immediately, and then the mass gain curve obeys the parabolic law, which corresponds to the growth of α-Al 2 O 3 film. A single α-Al 2 O 3 film kept on the surface of the specimen before 750 h oxidation. The oxidation is controlled by the inward diffusion of oxygen anions to react with Al cations at the oxide/metal interface. The shape of the exfoliation region of single α-Al 2 O 3 film is closed to an annulus, in which the (Ni, Co)O layer formed due to depletion of Al. The three-layer oxide scale formed rapidly after 750 h oxidation. With the continue consumption of Al, a discontinuous inner α-Al 2 O 3 layer formed, making oxide scale spall seriously and gain mass rapidly. The states of α-Al 2 O 3 film, the controlled film, are different in dendrite core and interdendritic region.

AB - Detailed long-term of 2000 h oxidation behavior of a Ni-based single crystal superalloy was investigated at 1000 °C. In the first oxidation stage, α-Al 2 O 3 formed immediately, and then the mass gain curve obeys the parabolic law, which corresponds to the growth of α-Al 2 O 3 film. A single α-Al 2 O 3 film kept on the surface of the specimen before 750 h oxidation. The oxidation is controlled by the inward diffusion of oxygen anions to react with Al cations at the oxide/metal interface. The shape of the exfoliation region of single α-Al 2 O 3 film is closed to an annulus, in which the (Ni, Co)O layer formed due to depletion of Al. The three-layer oxide scale formed rapidly after 750 h oxidation. With the continue consumption of Al, a discontinuous inner α-Al 2 O 3 layer formed, making oxide scale spall seriously and gain mass rapidly. The states of α-Al 2 O 3 film, the controlled film, are different in dendrite core and interdendritic region.

KW - Diffusion

KW - Ni-based single crystal superalloys

KW - Oxidation mechanism

KW - Single α-Al2O3 film

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DO - 10.1016/j.apsusc.2017.03.116

M3 - 文章

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JO - Applied Surface Science

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Pei H, Wen Z, Zhang Y, Yue Z. Oxidation behavior and mechanism of a Ni-based single crystal superalloy with single α-Al ₂ O ₃ film at 1000 °C Applied Surface Science. 2017 Jul 31;411:124-135. doi: 10.1016/j.apsusc.2017.03.116

Oxidation behavior and mechanism of a Ni-based single crystal superalloy with single α-Al ₂ O ₃ film at 1000 °C

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