2D mapping of stress/strain distribution within chromium layers deposited on Zr substrates

In order to enhance the oxidation resistance of nuclear Zr based fuel cladding tubes, chromium coatings are one of the most advanced and realistic concepts. In that
context, studying the stress distribution of the coating depending on fabrication process parameters (PVD) is of prime interest. The objective of the experiment is to
quantify the stress redistribution depending on the thickness/microstructure of the Cr coating (2 extreme conditions will be analysed in that experience). For that
purpose, we want to use the micro Laue set-up available on BM32 beamline associated with a polychromatic beam (5-22 keV) of 500 x 500 nm2: first, in-plane
mappings of 100 microns x 100 microns size with a step of 1 micron will be realize, and second depth-resolved maps will be acquired along 60 μm in-plane and 10
μm out-of-plane using the DAXM technique developed on the beamline to extract information through the thickness of the coating.