Early stages of scale formation during oxidation of γ/γ' strengthened single crystal ternary Co-base superalloy at 900 °C

Journal article
(Original article)


Publication Details

Author(s): Weiser M, Eggeler Y, Spiecker E, Virtanen S
Journal: Corrosion Science
Publisher: Elsevier Ltd
Publication year: 2018
Volume: 135
Pages range: 78-86
ISSN: 0010-938X
Language: English


Abstract


A study on the individual role of γ and γ′-phase during the scale formation on Co-9Al-9W (at.%) at 900 °C was conducted. High-accuracy thermogravimetric analysis was used to locate changes in the kinetics of scale growth. Compositions of three separated layers within the scale have been elucidated in detail. The results demonstrate the substantial impact of the two-phase microstructure on the initiation of oxidation for the appearance of the scale. Examination of STEM-EDX elemental mappings of the internal oxidation front during the early stages of scale growth can explain the origin of isolated Al2O3 precipitates instead of a closed protective layer.



FAU Authors / FAU Editors

Eggeler, Yolita
Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)
Spiecker, Erdmann Prof. Dr.
Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)
Virtanen, Sannakaisa Prof. Dr.
Professur für Werkstoffwissenschaften (Korrosion und Oberflächentechnik)
Weiser, Martin
Professur für Werkstoffwissenschaften (Korrosion und Oberflächentechnik)


Additional Organisation
Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM)
Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung)


How to cite

APA:
Weiser, M., Eggeler, Y., Spiecker, E., & Virtanen, S. (2018). Early stages of scale formation during oxidation of γ/γ' strengthened single crystal ternary Co-base superalloy at 900 °C. Corrosion Science, 135, 78-86. https://dx.doi.org/10.1016/j.corsci.2018.02.020

MLA:
Weiser, Martin, et al. "Early stages of scale formation during oxidation of γ/γ' strengthened single crystal ternary Co-base superalloy at 900 °C." Corrosion Science 135 (2018): 78-86.

BibTeX: 

Last updated on 2019-27-05 at 16:57