Barrier effect against hydrogen ingress by Ti segregating to surface of V-Ti alloy

Ryo Hayakawa; Yuji Hatano; Alexander Pisarev; Kuniaki Watanabe

doi:10.1238/Physica.Topical.108a00038

Barrier effect against hydrogen ingress by Ti segregating to surface of V-Ti alloy

Ryo Hayakawa^*, Yuji Hatano, Alexander Pisarev, Kuniaki Watanabe

^*Corresponding author for this work

Hydrogen Isotope Research Center, Organization for Promotion of Research

Research output: Contribution to journal › Conference article › peer-review

7 Scopus citations

Abstract

Specimens of V-4Ti alloy with Ti-enriched surfaces were prepared by heating in vacuo, and the influence of segregating Ti on H₂ absorption was examined at temperatures from 473 to 1023 K under the presence of water vapor of 10^-5 Pa. The rate of H₂ absorption was significantly reduced by surface segregation of Ti in the temperature range examined. Such reduction in the absorption rate was ascribed to the increase in surface coverage of oxygen caused by oxidation of Ti by water vapor. It was concluded that Ti segregating to the surfaces provides a favorable barrier effect against the ingress of hydrogen isotopes.

Original language	English
Pages (from-to)	38-41
Number of pages	4
Journal	Physica Scripta T
Volume	T108
DOIs	https://doi.org/10.1238/Physica.Topical.108a00038
State	Published - 2004
Event	International Topical Conference on Hydrogen in Condensed Matter - Helsinki, Finland Duration: 2003/06/25 → 2003/06/28

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Mathematical Physics
Condensed Matter Physics

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10.1238/Physica.Topical.108a00038

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title = "Barrier effect against hydrogen ingress by Ti segregating to surface of V-Ti alloy",

abstract = "Specimens of V-4Ti alloy with Ti-enriched surfaces were prepared by heating in vacuo, and the influence of segregating Ti on H2 absorption was examined at temperatures from 473 to 1023 K under the presence of water vapor of 10-5 Pa. The rate of H2 absorption was significantly reduced by surface segregation of Ti in the temperature range examined. Such reduction in the absorption rate was ascribed to the increase in surface coverage of oxygen caused by oxidation of Ti by water vapor. It was concluded that Ti segregating to the surfaces provides a favorable barrier effect against the ingress of hydrogen isotopes.",

author = "Ryo Hayakawa and Yuji Hatano and Alexander Pisarev and Kuniaki Watanabe",

year = "2004",

doi = "10.1238/Physica.Topical.108a00038",

language = "英語",

volume = "T108",

pages = "38--41",

journal = "Physica Scripta T",

issn = "0281-1847",

publisher = "IOP Publishing Ltd.",

note = "International Topical Conference on Hydrogen in Condensed Matter ; Conference date: 25-06-2003 Through 28-06-2003",

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TY - JOUR

T1 - Barrier effect against hydrogen ingress by Ti segregating to surface of V-Ti alloy

AU - Hayakawa, Ryo

AU - Hatano, Yuji

AU - Pisarev, Alexander

AU - Watanabe, Kuniaki

PY - 2004

Y1 - 2004

N2 - Specimens of V-4Ti alloy with Ti-enriched surfaces were prepared by heating in vacuo, and the influence of segregating Ti on H2 absorption was examined at temperatures from 473 to 1023 K under the presence of water vapor of 10-5 Pa. The rate of H2 absorption was significantly reduced by surface segregation of Ti in the temperature range examined. Such reduction in the absorption rate was ascribed to the increase in surface coverage of oxygen caused by oxidation of Ti by water vapor. It was concluded that Ti segregating to the surfaces provides a favorable barrier effect against the ingress of hydrogen isotopes.

AB - Specimens of V-4Ti alloy with Ti-enriched surfaces were prepared by heating in vacuo, and the influence of segregating Ti on H2 absorption was examined at temperatures from 473 to 1023 K under the presence of water vapor of 10-5 Pa. The rate of H2 absorption was significantly reduced by surface segregation of Ti in the temperature range examined. Such reduction in the absorption rate was ascribed to the increase in surface coverage of oxygen caused by oxidation of Ti by water vapor. It was concluded that Ti segregating to the surfaces provides a favorable barrier effect against the ingress of hydrogen isotopes.

UR - http://www.scopus.com/inward/record.url?scp=19644388646&partnerID=8YFLogxK

U2 - 10.1238/Physica.Topical.108a00038

DO - 10.1238/Physica.Topical.108a00038

M3 - 会議記事

AN - SCOPUS:19644388646

SN - 0281-1847

VL - T108

SP - 38

EP - 41

JO - Physica Scripta T

JF - Physica Scripta T

T2 - International Topical Conference on Hydrogen in Condensed Matter

Y2 - 25 June 2003 through 28 June 2003

ER -

Barrier effect against hydrogen ingress by Ti segregating to surface of V-Ti alloy

Abstract

ASJC Scopus subject areas

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