Surface segregation of 3 mol % yttria-doped tetragonal zirconia particle studied by atomic-resolution scanning transmission electron microscopy-energy-dispersive X-ray spectroscopy
Source abstract
Abstract
Atomic structure of the surfaces in commercial 3 mol % yttria-doped tetragonal zirconia (TZP) nano-particulate powders were studied by atomic resolution scanning transmission electron microscopy (STEM), and the surface segregation of Y were investigated by STEM energy-dispersive X-ray spectroscopy (EDS) at atomic scale. STEM-EDS observations revealed that the Y cations tend to segregate on the top surface layer, forming a monolayer segregation structure. Static lattice calculations revealed that the surface segregation of Y is energetically favorable. These results indicate that Y surface segregation occurs in the TZP powders, which might partially account for the grain boundary segregation in the sintered body of TZP ceramics.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Nuclear materials and radiation effects · Electronic and Structural Properties of Oxides · Nuclear Materials and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Engineering Innovation, The University of Tokyo
Next Generation Zirconia Social Cooperation Program, Institute of Engineering Innovation, The University of Tokyo
Inorganic Materials Research Laboratory, Tosoh Corporation
Department of Adaptive Machine Systems, Osaka University
Nanostructures Research Laboratory, Japan Fine Ceramics Center
Department of Materials Science and Engineering, School of Engineering, The University of Tokyo
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