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Title: Hydrogen Permeation Barrier Coatings

Gaseous hydrogen, H2, has many physical properties that allow it to move rapidly into and through materials, which causes problems in keeping hydrogen from materials that are sensitive to hydrogen-induced degradation. Hydrogen molecules are the smallest diatomic molecules, with a molecular radius of about 37 x 10-12 m and the hydrogen atom is smaller still. Since it is small and light it is easily transported within materials by diffusion processes. The process of hydrogen entering and transporting through a materials is generally known as permeation and this section reviews the development of hydrogen permeation barriers and barrier coatings for the upcoming hydrogen economy.
Authors:
Publication Date:
OSTI Identifier:
1001558
Report Number(s):
PNNL-SA-52988
19201; TRN: US201102%%238
DOE Contract Number:
AC05-76RL01830
Resource Type:
Book
Resource Relation:
Related Information: Materials for the Hydrogen Economy, 181-190
Publisher:
RH Jones and GJ Thomas; CRC Press, Boca Raton, FL, United States(US).
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN; ATOMS; COATINGS; DIFFUSION; HYDROGEN; PHYSICAL PROPERTIES; hydrogen; economy; permeation barrier; hydrogen embrittlement; degradation; Environmental Molecular Sciences Laboratory