Search
Morphology changes in Fe-Cr porous alloys upon high-temperature oxidation quantified by X-ray tomographic microscopy
Abstract
The effect of high-temperature oxidation at 850 C (10 h, 30 h, 100 h) and 900 C (10 h) on porous (30 % porosity) ferritic stainless steel (Fe22Cr) has been investigated using synchrotron tomographic microscopy, which allowed for visualisation, separation and quantitative analysis of the metallic core, closed pores, open pores and oxide scale phase. The same regions within the samples were investigated before and after oxidation performed at different conditions. Quantitative analysis of the tomographic data provided information on changes upon oxidation of the relative volume of the different phases, the specific surface area (SSA) of the metallic core, the thickness of the oxide scale and pore size distribution. The results were discussed in the context of thermogravimetric analysis of the samples and supported by SEM imaging. It was observed that oxidation leads to an increase of the SSA of steel and the largest increase (50 %) was obtained for the sample processed for 100 h at 850 C. It is demonstrated the open porosity forms a network of connected channels within the sample and it dominates in the volume. In addition, the 3D imaging revealed breakaway oxidation areas for samples, for which this phenomenon remained undetected using 2D SEM analysis.
Citations
-
8
CrossRef
-
0
Web of Science
-
6
Scopus
Authors (5)
-
F. Marone
- Paul Scherrer Institut
-
Małgorzata Makowska Dr.
- Paul Scherrer Institut
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.matdes.2022.110492
- License
-
open in new tab
Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
MATERIALS & DESIGN
no. 215,
ISSN: 0264-1275 - Language:
- English
- Publication year:
- 2022
- Bibliographic description:
- Koszelow D., Molin S., Karczewski J., Marone F., Makowska M.: Morphology changes in Fe-Cr porous alloys upon high-temperature oxidation quantified by X-ray tomographic microscopy// MATERIALS & DESIGN -Vol. 215, (2022), s.110492-
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.matdes.2022.110492
- Sources of funding:
-
- Project Corrosion of Porous Alloys
- Verified by:
- Gdańsk University of Technology
seen 90 times
Recommended for you
High-temperature kinetics study of 430L steel powder oxidized in air at 600–850 °C
- J. Karczewski,
- T. Brylewski,
- T. Miruszewski
- + 3 authors
Effective yttrium based coating for steel interconnects of solid oxide cells: Corrosion evaluation in steam-hydrogen atmosphere
- S. Molin,
- Å. Persson,
- T. Skafte
- + 6 authors
Fe-modified Mn2CuO4 spinel oxides: coatings based on abundant elements for solid oxide cell interconnects
- J. Ignaczak,
- L. Zeng,
- D. F. Sanchez
- + 6 authors
Multilayer coatings based on cerium oxide and manganese cobaltite spinel for Crofer22APU SOC interconnects
- E. Zanchi,
- J. Ignaczak,
- G. Cempura
- + 3 authors