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Hydrogen blistering under extreme radiation conditions

Sznajder, Maciej and Geppert, Ulrich and Dudek, Mirosław (2018) Hydrogen blistering under extreme radiation conditions. npj Materials Degradation. Nature Publishing Group. ISSN 2397-2106

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Official URL: https://www.nature.com/articles/s41529-017-0024-z

Abstract

Metallic surfaces, exposed to a proton flux, start to degradate by molecular hydrogen blisters. These are created by recombination of protons with metal electrons. Continued irradiation progresses blistering, which is undesired for many technical applications. In this work, the effect of the proton flux magnitude onto the degradation of native metal oxide layers and its consequences for blister formation has been examined. To study this phenomenon, we performed proton irradiation experiments of aluminium surfaces. The proton kinetic energy was chosen so that all recombined hydrogen is trapped within the metal structure. As a result, we discovered that intense proton irradiation increases the permeability of aluminium oxide layers for hydrogen atoms, thereby counteracting blister formation. These findings may improve the understanding of the hydrogen blistering process, are valid for all metals kept under terrestrial ambient conditions, and important for the design of proton irradiation tests.

Item URL in elib:https://elib.dlr.de/120220/
Document Type:Article
Title:Hydrogen blistering under extreme radiation conditions
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Sznajder, Maciejmaciej.sznajder (at) dlr.deUNSPECIFIED
Geppert, Ulrichulrich.geppert (at) dlr.deUNSPECIFIED
Dudek, Mirosławm.dudek (at) if.uz.zgora.plUNSPECIFIED
Date:23 January 2018
Journal or Publication Title:npj Materials Degradation
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:No
In ISI Web of Science:No
Publisher:Nature Publishing Group
ISSN:2397-2106
Status:Published
Keywords:hydrogen embrittlement, blistering
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):Proj. Entfaltungstechnologie . Solar Sail
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Mechanic and Thermal Systems
Deposited By: Sznajder, Dr.-Ing. Maciej
Deposited On:13 Jun 2018 10:00
Last Modified:19 Jun 2018 10:29

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