Investigation of H+ implanted Fe-Al alloys

13th International Workshop on Slow Positron Beam Techniques and Applications

Luká, F.^1 ; Íek, J.^1 ; Procházka, I.^1 ; Jirásková, Y.^2 ; Janikovi, D.^3 ; Veterníková, Šimeg^4 ; Anwand, W.^5 ; Butterling, M.^5

Charles University in Prague, Faculty of Mathematics and Physics, V Holeovikách 2, 18000 Praha 8, Czech Republic^1

Institute of Physics of Materials, Academy of Science of the Czech Republic, Zizkova 513/22, 61662 Brno, Czech Republic^2

Institute of Physics, Slovak Science Academy, Dúbravská cesta 9, 84511 Bratislava, Slovakia^3

Institute of Nuclear and Physical Engineering, Faculty of Electrical Engineering and Inform. Technology, Slovak University of Technology, Ilkoviova 3, 81219 Bratislava, Slovakia^4

Institut für Strahlenphysik, Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany^5

关键词: Al sample;    Fe;    al alloys;    Hydrogen concentration;    Hydrogen interaction;    Low-energy;    Sub-surfaces;    Vacancy-hydrogen complexes;    Variable-energy positron annihilation spectroscopies;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/505/1/012013/pdf
DOI  :  10.1088/1742-6596/505/1/012013

来源: IOP

【 摘 要 】

In the present work hydrogen interaction with vacancies was investigated in Fe-Al alloys with various concentration of vacancies. The Fe-Al samples were implanted with low energy H+ions (100 keV). This procedure introduced high hydrogen concentration into relatively narrow sub-surface region in the depth of ∼500 nm. Variable energy positron annihilation spectroscopy (VEPAS) was employed for investigation of hydrogen interaction with vacancies in the sub-surface region. This study revealed formation of vacancy hydrogen complexes in the sub-surface region. Thermal stability of vacancy-hydrogen complexes was investigated as well.