Results 191 to 200 of about 956,457 (232)

Hydrogen Permeation and Diffusion in Beryllium

Fusion Technology, 1995
ABSTRACTA precise hydrogen permeation experiment for beryllium was conducted at a temperature ranging from 735 to 1000 K under hydrogen gas pressure of 101 to 103 Pa.
Kaname Kizu, Keiji Miyazaki, Tetsuo Tanabe   +2 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

The electro-permeation of hydrogen into metals

Electrochimica Acta, 1970
Abstract It is sought to relate the diffusion coefficient and solubility for hydrogen in metals to the interaction of hydrogen with the metal phase. Determinations of permeation and diffusion coefficient have been made by a very sensitive electrochemical method at room temperature, and in some cases with temperatures up to 80°C, for platinum, nickel,
J.O'M. Bockris, M.A. genshaw, M. Fullenwider   +2 more
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

Effect of trapping on hydrogen permeation

Metallurgical Transactions A, 1975
Approximate solutions were obtained to the nonlinear partial differential equations derived by A. McNabb and P. K. Foster for a general model of diffusion-plus-trapping. The finite-difference method was applied to their equations for boundary conditions appropriate to hydrogen permeation and evolution in a plane. Solutions are shown to be stable and to
George R. Caskey, William L. Pillinger
openaire   +1 more source

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 and diffusion in molybdenum

Journal of Nuclear Materials, 1992
In order to determine both coefficients of diffusion and permeation of hydrogen in Mo correctly, a precise hydrogen permeation measurement has been carried out at temperatures ranging from 500 to 1100 K using pure H2 (less than 1 ppm H2O) with an upstream hydrogen pressure of 1 to 105 Pa. The determined diffusion (D) and permeation (Φ) coefficients are
T. Tanabe, Y. Yamanishi, S. Imoto
openaire   +2 more sources

Hydrogen Permeation through Nickel

Japanese Journal of Applied Physics, 1984
The time dependence of the rates of permeation of hydrogen through annealed and as-rolled nickel foils was measured in the temperature ranges 120–430°C and 80–200°C, respectively. Annealed specimens exhibited permeabilities, diffusivities and solubilities that were in fairly good agreement with previous results, while the permeation characteristics of ...
Yoshio Furuya, Eiji Hashimoto, Takao Kino   +2 more
openaire   +1 more source

Hydrogen permeation and diffusion in niobium

Metallurgical Transactions A, 1983
High temperature hydrogen permeation experiments were performed on niobium using ultra high vacuum techniques in an attempt to maintain clean specimen surfaces. Diffusivities and permeabilities were measured from 700 K to about 1400 K at hydrogen pressures ranging from 4.26 Pa to about 0.013 Pa.
Robert Sherman, H. K. Birnbaum
openaire   +1 more source

Photothermal-Assisted Hydrogen Permeation Enhancement

SSRN Electronic Journal, 2022
Xinpu Zhang, Xiaotong Li, Xuhui Zhang, Ang Li, Yang Zhang, Wei Peng   +5 more
openaire   +1 more source