DURABILITY OF YBA2CU3O7-DELTA IN SOLUTIONS OF SODIUM AND POTASSIUM HALIDES UNDER HYDROTHERMAL CONDITIONS

Authors
KORYTKOVA EN NESTERCHUK NI PIVOVAROVA LN ROMANOV DP DROZDOVA IA
Citation
En. Korytkova et al., DURABILITY OF YBA2CU3O7-DELTA IN SOLUTIONS OF SODIUM AND POTASSIUM HALIDES UNDER HYDROTHERMAL CONDITIONS, Inorganic materials, 34(4), 1998, pp. 362-367
Citations number
21
Categorie Soggetti
Material Science
Journal title
Inorganic materials → ACNP
ISSN journal
00201685
Volume
34
Issue
4
Year of publication
1998
Pages
362 - 367
Database
ISI
SICI code
0020-1685(1998)34:4<362:DOYISO>2.0.ZU;2-L
Abstract
Durability of YBa2Cu3O7-delta in aqueous solutions of sodium and potas sium halides (0.05-0.7 wt %) was studied at temperatures of 100-200 de grees C pressures of 10-70 MPa, and immersion times of 0.5, 1, and 3 h . Hydrothermal halogenation was found to improve structural perfection of the cuprate owing to the incorporation of halide and hydroxide ion s in the oxygen sublattice. Hydrothermal treatment under optimal condi tions (t = 100-110 degrees C, p = 10-30 MPa, tau = 0.5-1 h) fully prev ents water degradation of the material for a long time.