Mass-spectrometric analysis of diffusion and solubility of helium in cerium-gadolinium ceramics with a submicrocrystalline structure / Kovalenko M. A.,Kupryazhkin A. Ya.,Ivanov V. V. // TECHNICAL PHYSICS. - 2010. - V. 55, l. 1. - P. 137-140.

ISSN/EISSN:

1063-7842 / нет данных

Type:

Article

Abstract:

Diffusion and solubility of helium in Ce(0.8)Gd(0.2)O(1.9 - delta) ceramics (delta = 0, 0.015) with a submicrocrystal structure are studied by thermodesorption of helium from preliminarily saturated (in the gas phase) crystals at temperatures of 613 and 673 K in the saturated pressure range 0-21 MPa. It is shown that, in this ceramics (delta = 0), the defect-trap diffusion mechanism operates. The main positions for dissolution are neutral anion vacancies formed as a result of thermal dissociation of impurity-vacancy complexes and saturated up to similar to 1 x 10(19) cm(-3) at P = 6 MPa and T = 673 K. The dissociation energy of the complex and the energy of helium dissolution in the neutral anion vacancy are estimated at similar to 2 eV and below -0.3 eV, respectively.

Author keywords:

PALLADIUM

DOI:

10.1134/S1063784210010226

Web of Science ID:

ISI:000273686000022

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JAN
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	PALLADIUM
Research-Areas	Physics
Web-of-Science-Categories	Physics, Applied
Author-Email	kupr@dpt.ustu.ru
ResearcherID-Numbers	Ivanov, Victor/I-3517-2014
Number-of-Cited-References	9
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	18
Journal-ISO	Tech. Phys.
Doc-Delivery-Number	544UY