Abstract
The effect of impurity (stainless steel (SS) components, carbon) deposition onto niobium membrane surface on the membrane permeability to hydrogen particles is investigated with a plasma device. The deposition of SS components onto the upstream surface of the membrane at the membrane temperature ( T M)<800°C decreases plasma driven permeation (PDP) rate but increases molecule gas driven permeation (GDP) rate. In the case of carbon deposition at T M<800°C, PDP rate is reduced while GDP rate remains almost unchanged. It is argued that deposited SS components layer enhances the absorption/release of hydrogen molecules, on the other hand, deposited carbon layer lets hydrogen molecules freely pass through but traps suprathermal hydrogen particles. The impurities deposition effects on PDP rate disappear at T M≥800°C. It appears to be due to the dissolution of the impurities deposited onto the upstream surface into the membrane bulk within the measurements.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
