Pre-oxidation of porous ferritic Fe22Cr alloys for lifespan extension at high-temperature

被引:0
|
作者
Koszelow, D. [1 ,6 ]
Makowska, M. [2 ]
Marone, F. [3 ]
Cempura, G. [4 ]
Tomas, M. [5 ]
Froitzheim, J. [5 ]
Molin, S. [1 ]
机构
[1] Gdansk Univ Technol, Fac Elect Telecommun & Informat, Adv Mat Ctr, PL-80233 Gdansk, Poland
[2] Paul Scherrer Inst, Lab Nucl Mat, Lab Synchrotron Radiat & Femtochem, CH-5232 Villigen, Switzerland
[3] Paul Scherrer Inst, Swiss Light Source, Villigen, Switzerland
[4] AGH Univ Krakow, Fac Met Engn & Ind Comp Sci, Ctr Electron Microscopy Mat Sci, Al Mickiewicza 30, PL-30059 Krakow, Poland
[5] Chalmers Univ Technol, Energy & Mat, Kemivagen 10, S-41296 Gothenburg, Sweden
[6] Gdansk Univ Technol, Gdansk, Poland
关键词
Porous alloy; Corrosion; Lifespan prediction; Fuel cells; Tomographic microscopy; CHROMIUM VAPORIZATION; STAINLESS-STEEL; METALLIC INTERCONNECTS; OXIDATION-KINETICS; SELF-DIFFUSION; CR2O3; SCALES; OXIDE; CORROSION; TRANSPORT; GROWTH;
D O I
10.1016/j.corsci.2024.112129
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Pre-oxidation of porous ferritic Fe22Cr alloys was extensively studied in this paper. Weight gain measurements and SEM analysis revealed that pre-oxidation performed at 900 degrees C for 40 min increased the lifespan of the alloy. A Cr evaporation study did not disclose any significant influence of the pre-oxidation process on the Cr content in the alloy. For a more detailed assessment, TEM imaging and X-ray tomography measurements of pre-oxidized samples were performed. These analyses showed that alteration in the grain and grain boundary diffusion fluxes might be the key for explaining the corrosion prevention role of pre-oxidation.
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页数:13
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