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language
eng
Author
Kanai, Takashi Faculty of Science, Kanazawa University
Hirano, Kei-ichi High Energy Accelerator Research Organization
Okamoto, Hiroyuki School of Medicine, Kanazawa University
Description
The X-ray refraction imaging technique was applied to the quantitative study of hydrogen diffusion in titanium-hydride. Hydrogen diffusivity in titanium-hydride was determined by direct observation of the hydride. The hydride was formed on the surface of titanium by electrolytic-charging at 63°C. The specimens were cut into 1-mm thick slices for cross-sectional observations. The hydride layer was observed using the diffraction-enhanced X-ray imaging (DEI) method with asymmetric analyzer. Boundaries between titanium and the hydride were observed as thick black or white lines parallel to the specimen surface in the DEI images similar to previously reported results. Hydride distribution caused by hydrogen diffusion from the surface was converted to the intensity profiles of refraction images of the hydride using the measured rocking curve from an analyzer. The hydrogen diffusivity was calculated from the intensity profiles using the solution of the appropriate diffusion equation. The obtained hydrogen diffusivity in titanium-hydride depended upon the hydrogen concentration. The diffusivity showed good agreement with the widely accepted values in the low hydride concentration region.
Subject
hydrogen
titanium-hydride
diffraction-enhanced X-ray imaging
Journal Title
Transactions of the Materials Research Society of Japan
Volume
37
Issue
2
Start Page
319
End Page
323
ISSN
1382-3469
ISSN(Online)
2188-1650
Published Date
2012/06/01
DOI
Publisher
一般社団法人 日本MRS
Publisher Transcription
イッパン シャダン ホウジン ニホン MRS
NII Type
Journal Article
Format
PDF
Text Version
出版社版
Gyoseki ID
e15538
OAI-PMH Set
Faculty of Science and Engineering