ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract EPR measurements on yttria-doped tetragonal zirconia polycrystals (Y-TZP) were performed in order to study the modifications of the structure of the material following hydrothermal treatments. By X-ray irradiation of the samples, the structural defects near the oxygen vacancies were magnetically activated by electron trapping. Y2O3 aggregates were identified by EPR signals of defects of F+ type, coordinated with yttrium ions, and defects such as Y2+ (4d1) in four-fold coordination, randomly tetragonally distorted. The analysis of these defect sites, used as local probes, supports the existence of structural modification of the material and the formation of α-Y(OH)3 clusters.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00353204
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