Diffusion of hydrogen in Pb. beta. '' alumina

Journal Article · Sun Dec 15 04:00:00 EST 1985 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.336251· OSTI ID:6343199

Bates, J B; Dudney, N J; Wang, J C

Hydrogen diffuses into Pb ..beta..'' alumina during ion exchange of Na ..beta..'' alumina in molten lead halide salts. The hydrogen resides in the lattice as OH/sup -/ groups with the protons bound at several kinds of sites. The intrinsic diffusion coefficients of hydrogen and deuterium determined from analysis of infrared absorption profiles following isotope exchange are 9.1, 5.3, and 1.1. x 10/sup -7/ cm/sup 2//s at 515, 455, and 350/sup 0/C, respectively. These data fit an Arrhenius equation with an activation energy of 0.54 eV and a preexponential factor of 2.67 x 10/sup -3/ cm/sup 2//s. Protons are transported through the conduction layers by hopping to adjacent O= ions. The principal contribution to the activation energy is the energy required to break the O--H bond.

• Research Organization: Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6343199
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 58:12; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ABSORPTION SPECTRA
ABSORPTION SPECTROSCOPY
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATIONS
CHALCOGENIDES
CHARGED PARTICLES
CHARGED-PARTICLE TRANSPORT
DEUTERIUM
DEUTERIUM IONS
DIFFUSION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
HYDROGEN
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
HYDROGEN ISOTOPES
HYDROXYL RADICALS
INFRARED SPECTRA
IONIC CONDUCTIVITY
IONS
ISOTOPES
LEAD COMPOUNDS
LIGHT NUCLEI
MAGNESIUM COMPOUNDS
NONMETALS
NUCLEI
ODD-ODD NUCLEI
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATION TRANSPORT
RADICALS
SPECTRA
SPECTROSCOPY
STABLE ISOTOPES