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Corrosion Science
Article . 2018 . Peer-reviewed
License: Elsevier TDM
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Article . 2018
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Mechanisms of hot corrosion of pure nickel at 700°C: Influence of testing conditions

Authors: Grégoire, Benjamin; Montero, Xabier; Galetz, Mathias; Bonnet, Gilles; Pedraza, Fernando;

Mechanisms of hot corrosion of pure nickel at 700°C: Influence of testing conditions

Abstract

Abstract The hot corrosion behaviour of pure nickel was investigated at 700 °C to highlight the influence of testing conditions (composition of the atmosphere and presence or not of a Na2SO4 deposit) on the mechanisms of hot corrosion. The influence of SO2/SO3 inward transport through the porous NiO growing scales was studied by exposing nickel in synthetic air and in synthetic air + 0.5% SO2/SO3 without Na2SO4. The addition of Na2SO4 decreased the p O 2 and the p S O 3 at the sample surface, which promoted the formation of Ni-S liquid solution at the metal/scale interface. A sufficient p S O 3 was required to stabilize liquid Na2SO4-NiSO4 solutions and simulate Type-II hot corrosion conditions.

Country
France
Keywords

[CHIM.INOR] Chemical Sciences/Inorganic chemistry, Sodium sulphate, [CHIM.INOR]Chemical Sciences/Inorganic chemistry, [SPI.MAT] Engineering Sciences [physics]/Materials, [SPI.MAT]Engineering Sciences [physics]/Materials, Nickel, Hot corrosion, Oxidation, Sulphidation

  • BIP!
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    citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    38
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Top 10%
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Top 10%
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
38
Top 10%
Top 10%
Top 10%