Characterization of the conductivity of metal-oxide interface of zirconium based fuel cladding at low and high burnups
Research output: Contribution to journal › Article › peer-review
Colleges, School and Institutes
- Paul Scherrer Inst
In this study the conductivity/resistivity of oxide formed on Zircaloy-2 nuclear fuel cladding is measured. The same cladding grade (LK3/L) is used to compare the oxide formed after short and long residence times, respectively 3 and 9 cycles, in a Boiling Water Reactor (BWR). The oxide in the vicinity of the metal-oxide interface is studied. The measurements were carried out using a novel technique developed at PSI, using micromanipulators (micromanipulator) inside a FIB/SEM to probe different thicknesses of oxide and hence directly measure the resistance and calculate the resistivity of that thickness of oxide. The results from the 3 and 9 cycle oxides are compared. It is demonstrated that the resistivity of the oxide in the vicinity of the interface of the 9-cycle cladding increases with distance from the interface, much faster than that of 3-cycle cladding to a maximum level. The study is correlated to previous work, performed at PSI, characterizing these 2 materials by EPMA and other techniques.
|Number of pages||12|
|Journal||Journal of Nuclear Materials|
|Publication status||Published - 1 Apr 2020|