Results 251 to 260 of about 93,560 (283)

Hydrogen permeation through tritium permeation barrier in Pb–17Li

Fusion Engineering and Design, 2001
One of the main problems in the development of water cooled lithium lead (WCLL) DEMO fusion reactor is the reduction of the tritium permeation from the Pb–17Li, or the plasma, into the cooling water. The control of tritium losses is an important issue in fusion technology because of its safety and operational implications.
A. Aiello, G. Benamati, M. Chini, C. Fazio, E. Serra, Z. Yao   +5 more
openaire   +1 more source

Reducing Hydrogen Permeation through Metals

Defect and Diffusion Forum, 2011
Metal–hydrogen systems are of great basic and technological interest in connection to the role of hydrogen as a clean energy carrier. Frequently, metal systems are involved in hydrogen purification, storage, and engines making use of this fuel. The presence of hydrogen in a metallic matrix gives rise to modifications of electrical, optical and ...
Dapor, Maurizio, Miotello, Antonio
openaire   +2 more sources

Hydrogen permeation characteristics of La27Mo1.5W3.5O55.5

Journal of Membrane Science, 2014
Abstract Hydrogen permeation in 30% Mo-substituted lanthanum tungsten oxide membranes, La27Mo1.5W3.5O55.5 (LWMo), has been measured as a function of temperature, hydrogen partial pressure gradient, and water vapor pressure in the sweep gas. Transport of hydrogen by means of ambipolar proton–electron conductivity and – with wet sweep gas – water ...
Einar Vøllestad, Camilla K. Vigen, Anna Magrasó, Reidar Haugsrud   +3 more
openaire   +1 more source

Hydrogen permeation into iron

Journal of Applied Physics, 1989
The permeation of deuterium (D) from the gas phase into solution in iron has been measured using a new method based on ion beam analysis. For bare metal surfaces the D uptake was observed to be limited by matrix diffusion through the bulk. The influence of chemisorbed oxygen on the D uptake rate was examined in detail.
openaire   +1 more source

Hydrogen Permeation Measurements on Alumina

Journal of the American Ceramic Society, 2004
The aim of this work is to measure the hydrogen transport and solubility parameters in the commercial alumina. Measurements are conducted using a time‐dependent permeation method over the temperature range 1273–1673 K with hydrogen driving pressures in the range 10 4
E. Serra, A. Calza Bini, G. Cosoli, L. Pilloni   +3 more
openaire   +1 more source

Permeation of hydrogen through palladium

Journal of Nuclear Materials, 1995
Abstract Palladium membranes have been bombarded by beams of ∼ 10 eV atomic hydrogen with a peak flux and fluence of 4 × 10 16 cm −2 s −1 and 10 20 cm −2 , respectively. The time-dependent permeation resulting from these exposures has been measured as a function of membrane temperature.
J. Park, T. Bennett, J. Schwarzmann, S.A. Cohen   +3 more
openaire   +1 more source

Hydrogen Permeation Through Liquid LiPb

Physica Scripta, 2003
Permeation through a sandwich structure "martensitic steel-liquid LiPb alloy" has been modeled by numerical calculations. Diffusion-limited, absorption-limited, and recombination-limited regimes have been observed in various conditions. Features of permeation dynamics, steady state permeation rate, concentration profile, and the net accumulation have ...
A. Pisarev, G. Benamati, M. Mullin
openaire   +1 more source

Hydrogen Permeation of Alloy 22

CORROSION 2008, 2008
Abstract The effect of hydrogen permeation on the corrosion performance of Alloy 22 was investigated. 50µm thick Alloy 22 membranes were permeated with Hydrogen under a cathodic charging current density of 1mA/cm2 in a Devanathan-Stachurski cell at 60°C in pH 12.5, 0.1M NaOH solution.
M. L. Taylor, L. G. McMillion
openaire   +1 more source

Hydrogen permeation study with atomic hydrogen beam

Journal of Nuclear Materials, 1992
Hydrogen permeation through Mo and Ni using an atomic hydrogen beam is examined. Different from ion driven permeation (IDP), the hydrogen permeation rate does not show an appreciable spike, keeping the permeation rate at a constant and reproducible value.
openaire   +1 more source

Permeation of hydrogen through metals

Philosophical Magazine, 1959
Abstract The theory of permeation of hydrogen through certain transition metals has been further developed. It has been shown that this theory, in which certain slow phase-boundary processes couple with diffusion to produce the permeation phenomena, can in rather simple ways predict the observed behaviour.
R. Ash, R. M. Barrer
openaire   +1 more source