Secondary corrosion protection of FeCr(Al) model alloys at 600 °C – The influence of Cr and Al after breakaway corrosion
Artikel i vetenskaplig tidskrift, 2021

The influence of Cr and Al content on the oxidation behaviour of FeCr(Al) model alloys after breakaway oxidation at 600 °C and the underlying mechanisms were investigated in detail with thermogravimetrical analysis (TGA), thermodynamic calculations and advanced electron microscopy. The results showed that a Cr-content of ≥18 wt% drastically reduced the growth rate of the Fe-rich oxide scale, formed after breakaway oxidation, for FeCrAl alloys but not for FeCr alloys. This was attributed to the ability of the Fe(18-25)CrAl alloys to prevent internal oxidation, which enables the formation of a healing layer.

A. Chromium

A. Aluminium

A. FeCrAl

C. Internal oxidation

B. STEM

C. High temperature corrosion

Författare

Johan Eklund

Chalmers, Kemi och kemiteknik, Energi och material

Amanda Persdotter

Chalmers, Kemi och kemiteknik, Energi och material

Imran Hanif

Chalmers, Kemi och kemiteknik, Energi och material

Sedigheh Bigdeli

Chalmers, Kemi och kemiteknik, Energi och material

Torbjörn Jonsson

Chalmers, Kemi och kemiteknik, Energi och material

Corrosion Science

0010-938X (ISSN)

Vol. 189 109584

Ämneskategorier

Annan kemi

Metallurgi och metalliska material

Korrosionsteknik

Infrastruktur

Chalmers materialanalyslaboratorium

DOI

10.1016/j.corsci.2021.109584

Mer information

Senast uppdaterat

2021-06-08