Ceramics offer a desirable combination of physical and chemical properties for applications in extreme environments. We have examined the fundamental mechanisms governing the formation of metal nanoparticles in a ceramic matrix relevant to nuclear waste forms. We synthesized ceria films doped with metals, such as Mo, and subjected them to a variety of extreme processing conditions including ion bombardment and annealing at temperatures up to 1350 K. We used atomistic simulation to complement the synthesis and high resolution electron microscopy characterization efforts. The results offer insights into the effect of external stimuli on chemical and microstructural changes in ceramics.

Formation of metallic nanoparticles in a ceramic matrix

254th National Meeting (2017)

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