Concentration dependence of Fe segregation near the surface in V-Fe alloys after V+ ion irradiation |
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Authors: | G. V. Lysova G. A. Birzhevoi M. I. Zakharova |
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Affiliation: | (1) Federal State Unitary Enterprise State Scientific Center of the Russian Federation Leipunskii Institute of Physics and Power Engineering, Obninsk, Kaluga oblast, 249033, Russia |
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Abstract: | The effect of Fe segregation near the free surface of V model alloys containing 2, 5, or 7 at % Fe is investigated by x-ray photoelectron spectroscopy. Segregation is induced by 50-keV V+ ion irradiation at a temperature of 30–40°C with fluences ranging from 1019 to 1021. Young’s moduli in these alloys are measured by the torsion pendulum method. The degree of Fe segregation is estimated, and its dependence on the irradiation dose and iron concentration in these alloys is analyzed. Correlation is found between the behavior of Young’s moduli and the degree of iron surface segregation as functions of the Fe concentration in the alloys. |
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