Effects of pH value on characteristics of oxide films on 316L stainless steel in Zn-injected borated and lithiated high temperature water

Effects of Nitrogen on Passivity of Nickel-Free Stainless Steels by Electrochemical Impedance Spectroscopy Analysis

“…2). Such a secondary passivation or anodic peak can be attributed to the change of the passive films formed on the HNSSs, which is similar to the potentiodynamic polarization behavior of stainless steels and nickel-based alloys in high temperature aqueous environments (Ref [29][30][31][32][33][34]. A series of EIS measurements were performed at 20 mV intervals in the potential ranges of active dissolution (À0.52 to À0.4 V SCE ) and active-passive transition (À0.4 to À0.3 V SCE ).…”

Evolution of Calcareous Deposits and Passive Film on 304 Stainless Steel with Cathodic Polarization in Sea Water

“…It can also decrease the resistivity of the film with the composition and structure of oxides changed [13]. Therefore, it is reasonable to attribute the decrease of R ox at the first stage of polarization at −0.80 V to the reduction of the passive film [34][35][36][37].…”

“…Then, the variation of current density shall be related to the effect of calcareous deposits and the variance of oxide film formed on the stainless steel with polarization at different potentials, which will be discussed later. It is also worth noting that there exists a current density increase at the initial stage for −0.65 V and −0.80 V, which may be attributed to the reduction of passive film on 304 SS [33][34][35][36][37]. The prompt decrease of current density initially with polarization at −0.50 V can be attributed to the consumption of oxygen if the passive film is not reduced at this potential [9].…”

Behavior of Zinc Incorporation into Fuel Deposits in Borated and Lithiated Water with Dissolved Zinc

“…Accordingly, as of 2014, there were 85 PWRs worldwide, and most BWRs have implemented the zinc injection technology into the RCS [ 17 ]. As mentioned above, a lot of research on zinc addition has been performed from the viewpoint of the corrosion rate [ 5 , 6 , 18 , 19 ], corrosion release rate [ 4 , 5 , 6 , 10 , 20 ], oxidation kinetics [ 7 , 12 , 21 , 22 , 23 ], dose rate [ 20 , 24 , 25 , 26 ], and zinc incorporation [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 20 ] in the oxide films of Ni-based alloys and stainless steels in laboratories and operating PWRs. However, there is relatively little open literature on the effects of zinc injection on fuel deposits, possibly because of experimental difficulty in laboratories and extremely high-level radiation from burned fuel assemblies.…”