Deuterium retention and desorption behavior in oxidized ferritic steel

Abstract

Deuterium retention and desorption behavior in the oxidized F82H ferritic steel were investigated. The relation between the deuterium retention and the surface state of oxidized sample was also investigated. The deuterium retained in the ferritic steel sample was desorbed in forms of HD, D 2 , HDO, and D 2 O. Large HDO desorption at around 600 K was observed in the oxidized sample. The ratio of deuterium atom desorbed in form of HDO to total amount retained in the oxidized sample was larger than that in the non-oxidized sample.At high deuterium ion fluence, the amount of deuterium retained in the oxidized sample decreased with the deuterium ion fluence. Contrary, the amount of deuterium retained in the non-oxidized sample increases with the fluence. The feature of retention in the oxidized sample at high fluence is explained by the reduction of oxygen content due to the oxygen release during the irradiation.

Surface modification and deuterium retention in reduced-activation steels exposed to low-energy, high-flux pure and helium-seeded deuterium plasmas

“…In the last few years, experiments have provided a considerable database on the D retention in undamaged and damaged RAFM and RAFM/RAF-ODS steels irradiated with D ions and exposed to D plasmas [12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27]. In Refs.…”

Deuterium retention on He-irradiated F82H with surface impurity layer

“…The behavior properties of hydrogen isotopes in F82H, such as diffusivity and depth profile of implanted deuterium, have so far been documented [2][3][4][5][6][7][8], including reports about the effects of radiation damage [5]. However, the relationship between radiation damage and trapping sites for deuterium is not clear yet.…”

Helium retention and surface morphology of oxidized vanadium alloy

“…In addition, it is known that some vanadium alloys are rather oxidized [3]. The surface oxidation affected the deuterium retention and desorption properties of alloys such as reduced activation ferritic steel [4]. The helium retention and desorption behaviors might depend on the oxidized state for the surface of the vanadium alloy.…”