Back to Search Start Over

Influences of sulfur segregation to permeability in Pd-D2 permeation system

Authors :
N. Takahashi
T. Motohiro
J. S. Gao
T. Hioki
Source :
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 28:147-151
Publication Year :
2010
Publisher :
American Vacuum Society, 2010.

Abstract

The influence of segregated sulfur on palladium permeability was investigated using deuterium permeation through palladium membrane, which was pretreated by annealing in vacuum and/or in air. It has been found that the palladium membrane is almost impermeable after vacuum annealing, while it is permeable after air annealing. A combination of vacuum annealing of a Pd membrane followed by annealing in air leads to better and more stable D2 permeation because S has been depleted from the Pd bulk. In fact, cleaning S from Pd in spell out (UHV) normally proceeds via cycles of high T annealing to drive S to the surface, followed by burning off the S as SO2 by heating in an O2 environment. The results in this study well demonstrate the influence of sulfur on the deuterium-permeation rate and on the behavior of sulfur segregation from Pd bulk to the surface.

Details

ISSN :
15208559 and 07342101
Volume :
28
Database :
OpenAIRE
Journal :
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films
Accession number :
edsair.doi...........3865050e9c7b49bc0fbc8df1ed13b08c
Full Text :
https://doi.org/10.1116/1.3273318