Should the oxygen source be considered in the initiation of KCl-induced high-temperature corrosion?

Juho Lehmusto; Mohammad Sattari; Mats Halvarsson; Leena Hupa

doi:10.1016/j.corsci.2021.109332

Should the oxygen source be considered in the initiation of KCl-induced high-temperature corrosion?

Juho Lehmusto^*, Mohammad Sattari, Mats Halvarsson, Leena Hupa

^*Korresponderande författare för detta arbete

Forskningsoutput: Tidskriftsbidrag › Artikel › Vetenskaplig › Peer review

5 Citeringar (Scopus)

Sammanfattning

The role of two oxygen sources, oxygen and water vapor, in the initiation of KCl-induced high-temperature corrosion was addressed by studying two high-alloyed commercial materials at 550 °C. The differentiation between the two oxygen sources was implemented with ¹⁸O-enriched water and ¹⁶O₂.
Based on the results, the solid-solid reaction between KCl(s) and the protective oxide on the alloy surface appeared to be more responsible for corrosion than the gas-solid reaction between KCl(g) and the protective oxide. Water was more involved in the abovementioned reactions than O₂: ¹⁸O was the main oxygen isotope found in the formed surface oxides and intermediates.

Originalspråk	Engelska
Artikelnummer	109332
Tidskrift	Corrosion Science
Volym	183
DOI	https://doi.org/10.1016/j.corsci.2021.109332
Status	Publicerad - 1 maj 2021
MoE-publikationstyp	A1 Tidskriftsartikel-refererad

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10.1016/j.corsci.2021.109332Licens: CC BY-NC-ND

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@article{9baf1a40a1eb49d0ac0cf986461bd2e4,

title = "Should the oxygen source be considered in the initiation of KCl-induced high-temperature corrosion?",

abstract = "The role of two oxygen sources, oxygen and water vapor, in the initiation of KCl-induced high-temperature corrosion was addressed by studying two high-alloyed commercial materials at 550 °C. The differentiation between the two oxygen sources was implemented with 18O-enriched water and 16O2.Based on the results, the solid-solid reaction between KCl(s) and the protective oxide on the alloy surface appeared to be more responsible for corrosion than the gas-solid reaction between KCl(g) and the protective oxide. Water was more involved in the abovementioned reactions than O2: 18O was the main oxygen isotope found in the formed surface oxides and intermediates.",

keywords = "Alloy, Stainless steel, SEM, SIMS, TEM, XPS, High-temperature corrosion",

author = "Juho Lehmusto and Mohammad Sattari and Mats Halvarsson and Leena Hupa",

year = "2021",

month = may,

day = "1",

doi = "10.1016/j.corsci.2021.109332",

language = "English",

volume = "183",

journal = "Corrosion Science",