Influence of Co to Ni ratio in γ′-strengthened model alloys on oxidation resistance and the efficacy of the halogen effect at 900 °C

Weiser M, Galetz MC, Zschau HE, Zenk C, Neumeier S, Göken M, Virtanen S (2019)

Publication Type: Journal article

Publication year: 2019

Journal

DOI: 10.1016/j.corsci.2019.05.007

Abstract

The role of base element (Co or Ni) in γ′-strengthened single-crystalline superalloys was elucidated in the present study. Reaction kinetics during oxidation at 900 °C were assessed by thermogravimetry and measurements of individual layer thicknesses in the multilayered oxide scales. The development of diffusion-limiting barrier layers as well as the extent of sub-scale phase transitions could be directly correlated to the Co/Ni ratio in the alloy. For the first time a surface pretreatment with F was applied to Co-base superalloys. Apparent differences in the efficacy of the halogen effect depending on the Co content in the model alloys were observed.

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Gesellschaft für Chemische Technik und Biotechnologie (DECHEMA) Germany (DE)

How to cite

APA:

Weiser, M., Galetz, M.C., Zschau, H.E., Zenk, C., Neumeier, S., Göken, M., & Virtanen, S. (2019). Influence of Co to Ni ratio in γ′-strengthened model alloys on oxidation resistance and the efficacy of the halogen effect at 900 °C. Corrosion Science. https://dx.doi.org/10.1016/j.corsci.2019.05.007

MLA:

Weiser, Martin, et al. "Influence of Co to Ni ratio in γ′-strengthened model alloys on oxidation resistance and the efficacy of the halogen effect at 900 °C." Corrosion Science (2019).

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