Cycled hydrogen permeation through Armco iron – A joint experimental and modeling approach
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In: Corrosion science, Vol. 176.2020, No. November, 109017, 23.09.2020.
Research output: Contribution to journal › Article › Research › peer-review
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TY - JOUR
T1 - Cycled hydrogen permeation through Armco iron – A joint experimental and modeling approach
AU - Drexler, Andreas
AU - Siegl, Wolfgang
AU - Ecker, Werner
AU - Tkadletz, Michael
AU - Klösch, Gerald
AU - Schnideritsch, Holger
AU - Mori, Gregor Karl
AU - Svoboda, Jiří
AU - Fischer, Franz-Dieter
PY - 2020/9/23
Y1 - 2020/9/23
N2 - Understanding hydrogen embrittlement in steels requires research in hydrogen diffusion and trapping at microstructural defects. The present paper deals with hydrogen permeation and trapping at defects in the base material, Armco iron, eliminating effects coupled with alloying and precipitation. Cycled permeation curves are recorded and evaluated by using sound diffusion models to identify hydrogen trap sites as dislocations, grain boundaries and vacancies and assign their trapping energies. Furthermore, trap densities are evaluated and used together with the trapping energies as parameters in an adapted diffusion equation for hydrogen, interpreting the experiments significantly better than simple use of classical Fick's laws.
AB - Understanding hydrogen embrittlement in steels requires research in hydrogen diffusion and trapping at microstructural defects. The present paper deals with hydrogen permeation and trapping at defects in the base material, Armco iron, eliminating effects coupled with alloying and precipitation. Cycled permeation curves are recorded and evaluated by using sound diffusion models to identify hydrogen trap sites as dislocations, grain boundaries and vacancies and assign their trapping energies. Furthermore, trap densities are evaluated and used together with the trapping energies as parameters in an adapted diffusion equation for hydrogen, interpreting the experiments significantly better than simple use of classical Fick's laws.
UR - http://www.scopus.com/inward/record.url?scp=85091918501&partnerID=8YFLogxK
U2 - 10.1016/j.corsci.2020.109017
DO - 10.1016/j.corsci.2020.109017
M3 - Article
VL - 176.2020
JO - Corrosion science
JF - Corrosion science
SN - 0010-938X
IS - November
M1 - 109017
ER -
