Use this url to cite publication: https://hdl.handle.net/20.500.12259/41225
Publication type
type::text::periodical::journal::contribution to journal::journal article::research article
Type of publication (PDB)
Straipsnis Clarivate Analytics Web of Science / Article in Clarivate Analytics Web of Science (S1)
Field of Science
Title
The role of processes on the surface in organization of long range mass-transport in the bulk
Is part of
Solid state phenomena: Diffusion and defect data, Part B. Zurich-Uetikon, Switzerland : Trans Tech Publications, 2004, Vol. 97-98
Extent
p. 185-190
Publisher
Zurich-Uetikon, Switzerland : Trans Tech Publications
Publisher (trusted)
Trans Tech Publications
Date Issued
2004
Description
[6th International Conference on Self-Formation Theory and Applications Vilnius, Lithuania, Nov. 26-28, 2003]. ISBN:3-908450-85-3
ISSN (of the container)
1012-0394
DOI
https://doi.org/10.4028/www.scientific.net/SSP.97-98.185
WOS
WOS:000223163200028
Other Identifier(s)
VDU02-000002003
Abstract
Yttria-stabilized zirconia (YSZ) coatings were synthesized using dc magnetron sputter deposition of Y/Zr layers followed by thermal treatment in the range of temperatures 600- 1000 degreesC at atmospheric pressure in air. The characterization of YSZ coating structure was carried out by X-ray diffraction. The secondary ion mass-spectrometry analysis was used for the recording of depth profiles of the most important elements in coatings and at interface. The conducted analysis showed that processes on the surface play a dominant role in the synthesis mechanism of YSZ coatings homogeneous in structure and composition during the thermal oxidation. The excess of surface thermodynamic potentials supports an intensive intermixing across Y/Zr layers with continuous supply of oxygen through the surface. Under highly non-equilibrium conditions on the surface, the adatoms are driven into grain boundaries of crystallites and result in high compressive stress in grains. The stress relaxation initiates the plastic flow of matrix material with incorporation of oxygen atoms. Thermally activated dislocation glide is considered as the dominant plastic-deformation mechanism in these materials.
Coverage Spatial
CH
Language
Anglų / English (en)