Should the oxygen source be considered in the initiation of KCl-induced high-temperature corrosion?
Artikel i vetenskaplig tidskrift, 2021

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.

B: TEM

A: Alloy

B: XPS

B: SIMS

A: Stainless steel

B: SEM

C: High temperature corrosion

Författare

Juho Lehmusto

Åbo Akademi

Mohammad Sattari

Chalmers, Fysik, Mikrostrukturfysik

Mats Halvarsson

Chalmers, Fysik, Mikrostrukturfysik

Leena Hupa

Åbo Akademi

Corrosion Science

0010-938X (ISSN)

Vol. 183 109332

Ämneskategorier

Annan kemiteknik

Annan kemi

Korrosionsteknik

DOI

10.1016/j.corsci.2021.109332

Mer information

Senast uppdaterat

2021-03-25