Journal of the Ceramic Society of Japan
Online ISSN : 1348-6535
Print ISSN : 1882-0743
ISSN-L : 1348-6535
Full papers
Surface segregation of 3 mol % yttria-doped tetragonal zirconia particle studied by atomic-resolution scanning transmission electron microscopy-energy-dispersive X-ray spectroscopy
Bin FENGAkihito KUMAMOTOKoji MATSUIMasatoshi TANEMURAMasato YOSHIYAHidehiro YOSHIDAYuichi IKUHARA
Author information
Keywords: ZrO2, STEM, EDS, Surface, Segregation
JOURNALS FREE ACCESS

2021 Volume 129 Issue 9 Pages 561-565

Details
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.

Information related to the author
© 2021 The Ceramic Society of Japan

この記事はクリエイティブ・コモンズ [表示 - 改変禁止 4.0 国際]ライセンスの下に提供されています。
https://creativecommons.org/licenses/by-nd/4.0/deed.ja
Previous article Next article
feedback
Top