| Numéro |
J. Phys. Colloques
Volume 51, Numéro C1, Janvier 1990
Proceeding of the International CongressIntergranular and Interphase Boundaries in materials |
|
|---|---|---|
| Page(s) | C1-507 - C1-512 | |
| DOI | https://doi.org/10.1051/jphyscol:1990179 | |
J. Phys. Colloques 51, C1-507-C1-512 (1990)
DOI: 10.1051/jphyscol:1990179
Kanagawa Institute of Technology, Atsugi, Kanagawa 243-02, Japan
DOI: 10.1051/jphyscol:1990179
SURFACE-LAYER THICKNESS AND NEAR-SURFACE DIFFUSION OF OXYGEN IN Y2O3
Y. IKUMA, W. KOMATSU, K. ISHII et R. SANOSAKAKanagawa Institute of Technology, Atsugi, Kanagawa 243-02, Japan
Abstract
Oxygen exchange reaction between Y2O3 and 18O2 was monitored with a microbalance. Analyzing data the near-surface diffusion coefficient and the surface-layer thickness were obtained. The nearsurface diffusion is 1-4 orders of magnitude faster than the oxygen lattice diffusion in the same system. The surface-layer thickness is similar to the thickness in m-ZrO2 and is slightly larger than that in NiO.