Results 321 to 330 of about 1,832,454 (376)

Combined effect of cathodic potential and sulfur species on calcareous deposition, hydrogen permeation, and hydrogen embrittlement of a low carbon bainite steel in artificial seawater

Corrosion Science, 2019
Calcareous deposition, hydrogen permeation, and hydrogen embrittlement of E690 steel in thiosulfate-containing artificial seawater (ASW) under cathodic polarization are investigated.
Huiyun Tian, Juncheng Xin, Yong Li, Xin Wang, Zhongyu Cui   +4 more
semanticscholar   +1 more source

Models for hydrogen permeation in metals

Journal of Applied Physics, 1992
Hydrogen transport in metals is affected by processes occurring in the bulk, the surface/bulk, and gas/surface interfaces. Several models have been proposed to explain the permeation process. Here the development of the various models is discussed and the similarities and differences among them are highlighted.
P. L. Andrew, A. A. Haasz
openaire   +1 more source

Theoretical investigation of molybdenum/tungsten-vanadium solid solution alloy membranes: Thermodynamic stability and hydrogen permeation

, 2020
To improve the resistance to hydrogen embrittlement and hydrogen permeation performance of vanadium (V) membranes, first-principles calculations were employed to study the stability, dissolution, and diffusion properties of H in transition metal (M = Mo,
Zhongmin Wang, J. Qin, Qian Hu, Dianhui Wang, Feng Wang, Y. Zhong, Jiaoxia Zhang, Huai-ying Zhou, Mengyao Dong, Chaohao Hu, Hu Liu, Zhanhu Guo   +11 more
semanticscholar   +1 more source

Effect of interaction between corrosion film and H2S/CO2 partial pressure ratio on the hydrogen permeation in X80 pipeline steel

Corrosion Engineering, Science and Technology, 2020
The hydrogen permeation behaviour of X80 pipeline steel exposed to corrosion environments with different H2S/CO2 partial pressure ratios at room temperature was investigated through the high-pressure electrochemical hydrogen permeation test. Both CO2 and
Chengshuang Zhou, Bei Fang, Jing Wang, Shiyin Hu, B. Ye, Yanming He, Jinyang Zheng, Lin Zhang   +7 more
semanticscholar   +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

Effect of tensile stress on the hydrogen permeation of MS X65 pipeline steel under sulfide films

, 2020
The effect of the tensile stress on the hydrogen permeation of MS X65 pipeline with sulfide films was investigated through measuring the steady-state hydrogen permeation current (I∞), permeability (J∞L) and apparent diffusivity (Dapp) and quantitatively ...
Fangyu Ge, F. Huang, W. Yuan, Zhixian Peng, Jing Liu, Y. F. Cheng   +5 more
semanticscholar   +1 more source

Thermodynamic analysis on mid/low temperature solar methane steam reforming with hydrogen permeation membrane reactors

Applied Thermal Engineering, 2019
Hydrogen production by methane reforming reaction in membrane reactors is a promising means of solar energy harvesting and storage. The integration of endothermic methane reforming with selective removal of H2 through hydrogen permeation membrane ...
Hongsheng Wang, Mingkai Liu, Hui Kong, Yong Hao   +3 more
semanticscholar   +1 more source

Cycled hydrogen permeation through Armco iron – A joint experimental and modeling approach

, 2020
Understanding hydrogen embrittlement in steels requires research in hydrogen diffusion and trapping at microstructural defects. The present paper deals with hydrogen permeation and trapping at defects in the base material, Armco iron, eliminating effects
A. Drexler, W. Siegl, W. Ecker, M. Tkadletz, G. Klösch, Holger Schnideritsch, G. Mori, J. Svoboda, F. Fischer   +8 more
semanticscholar   +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