Published September 2021 | Version v1
Journal article Metadata-only

Surface segregation of 3 mol % yttria-doped tetragonal zirconia particle studied by atomic-resolution scanning transmission electron microscopy-energy-dispersive X-ray spectroscopy

Creators

  • 1. Tokyo University, Graduate School of Engineering, Institute of Engineering Innovation, Tokyo (Japan)
  • 2. Tokyo University, Graduate School of Engineering, Institute of Engineering Innovation, Next Generation Zirconia Social Cooperation Program, Tokyo (Japan)
  • 3. Osaka University, Graduate School of Engineering, Department of Adaptive Machine Systems, Suita, Osaka (Japan)

Description

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. (author)

Availability note (English)

Available from DOI: https://doi.org/10.2109/jcersj2.21032

Additional details

Identifiers

DOI
10.2109/jcersj2.21032;

Publishing Information

Journal Title
Journal of the Ceramic Society of Japan (Online)
Journal Volume
129
Journal Issue
9
Journal Page Range
p. 561-565
ISSN
1348-6535

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
53079553
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
CERAMICS; CRYSTAL DOPING; CRYSTAL LATTICES; ELECTRON DIFFRACTION; GRAIN BOUNDARIES; PHASE TRANSFORMATIONS; SEGREGATION; STRAINS; SURFACES; TRANSMISSION ELECTRON MICROSCOPY; X-RAY SPECTROSCOPY; YTTRIUM; ZIRCONIUM OXIDES
Descriptors DEC
CHALCOGENIDES; COHERENT SCATTERING; CRYSTAL STRUCTURE; DIFFRACTION; ELECTRON MICROSCOPY; ELEMENTS; METALS; MICROSCOPY; MICROSTRUCTURE; OXIDES; OXYGEN COMPOUNDS; SCATTERING; SPECTROSCOPY; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; ZIRCONIUM COMPOUNDS

Optional Information

Notes
28 refs., 4 figs.