Abstract
3.5–4.75 mg cm−2 thick UO2 coatings were electrodeposited using alkaline uranyl nitrate-ammonium oxalate bath on alloy 600 onto which nickel and copper interlayers were previously electrochemically formed. Micro laser Raman spectroscopy of annealed coating confirmed the formation of UO2 by showing a peak at 447 cm−1. Scanning electron microscopy showed uniform morphology with an average grain size of 1 µm. Glow discharge optical emission spectroscopy revealed no significant diffusion of nickel and copper into UO2 due to annealing. Rutherford backscattering spectroscopy showed increased thickness of annealed coating. Scratch adhesion test indicated improved cohesive and adhesive strength of coating after annealing.
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