Radiation-induced potential difference between electrodes with and without gamma rays

Electrochemical behaviour of gold and stainless steel under proton irradiation and active RedOx couples

“…Similar behaviours of the free corrosion potentials have been obtained in Cl − solutions for AISI 304L [2], in groundwater (J-13) for AISI 304L and 316L [1] and in H 2 SO 4 for AISI 347L [4]. For noble metals, most studies reported in the literature deals with Pt [1,4,[6][7][8] for which the free exchange potential usually decreases under gamma irradiation.…”

“…One striking property for the interfaces irradiated in their pristine state is the reproducibility of the stages through which the interfaces go. It is interesting to compare this evolution to those reported in the literature for immersed electrodes under gamma irradiation [1][2][3][4][5][6][7][8][9][10]. Only one oxidising stage is generally observed where the free exchange potential reaches a quasi-steady value that varies is the range, +100 to +400 mV/SCE, depending on the nature of the stainless steels and solutions.…”

“…A literature review [1][2][3][4][5][6][7][8][9][10]12] shows that the present investigation provides the first data on the evolution of the free exchange potential of AISI 316L/Na 2 SO 4 (0.1 M) interfaces under 6 MeV proton irradiation for dose rates ranging from 8 × 10 6 to 4.8 × 10 7 Gy h −1 . The free exchange potential shows several stages of evolution depending on the dose accumulated by the AISI 316L/Na 2 SO 4 (0.1 M) interfaces.…”

“…The free exchange potential for Pt electrodes immersed in solutions is usually found to decrease under gamma [1,4,[6][7][8].…”

“…Most of the in situ experiments on corrosion under irradiation that are reported in the literature concern the response of electrodes immersed in electrochemical cells irradiated by gamma [1][2][3][4][5][6][7][8]. The gamma sources that are generally used are 60 Co and the dose rates vary typically in the range 10 3 < dr(Gy h −1 ) < 10 4 .…”