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

来源：

CORROSION SCIENCE | 2024年 / 234卷

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.

引用

页数：13

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