Initial corrosion attack of 304L and T22 in 2 MW biomass gasifier: a microstructural investigation
Artikel i vetenskaplig tidskrift, 2015

The work investigates the initial corrosion attack on a low alloyed steel and a stainless steel in a 2 MW test gasifier. The gasifier environment generates homogenous deposits that consist mainly of carbon containing species, potassium sulphate, potassium chloride and zinc sulphide. The stainless steel exhibits better corrosion resistance compared to the low alloyed steel and the analysis indicates a protective thin scale covering parts of the surface after 4 h exposure. However, in some areas the oxide scale has lost its protective properties and thicker oxide scales are seen. The thick oxide islands consist of an inward growing Fe,Cr,Ni oxide and an outward growing iron oxide. The low alloyed steel shows a more homogenous and faster initial corrosion attack. The thick scales exhibit a sharp straight line in the middle of the scale that separates the bottom spinel oxide from the outer iron rich parts of the scale. It is considered that this flat interface corresponds to the original sample surface

Syngas coolers

Biomass gasification

Stainless steel

Corrosion

Författare

Hamed Hoseini Hooshyar

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi

Jesper Liske

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi

Lars-Gunnar Johansson

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi

Martin Seemann

Chalmers, Energi och miljö, Energiteknik

Torbjörn Jonsson

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi

Materials at High Temperatures

0960-3409 (ISSN)

Vol. 32 1-2 197-204

Styrkeområden

Energi

Ämneskategorier

Korrosionsteknik

DOI

10.1179/0960340914Z.000000000101

Mer information

Skapat

2017-10-08