Hydrogen Sorption by Ti(0001) Single Crystal Surfaces.

• WILDE Markus

  Institute of Industrial Science, The University of Tokyo

• MATSUMOTO Masuaki

  Institute of Industrial Science, The University of Tokyo

• FUKUTANI Katsuyuki

  Institute of Industrial Science, The University of Tokyo

• OKANO Tatsuo

  Institute of Industrial Science, The University of Tokyo

• MIZUNO Yoshiyuki

  Department of Precision Engineering, Chiba Institute of Technology

• HOMMA Teiich

  Department of Precision Engineering, Chiba Institute of Technology

Bibliographic Information

Other Title

• Ｔｉ（０００１）単結晶表面での水素吸収過程
• Ti 0001 タンケッショウ ヒョウメン デ ノ スイソ キュウシュウ カテイ

Abstract

Hydrogen interaction with the Ti (0001) single crystal surface was investigated with Nuclear Reaction Analysis (NRA) using ¹H (¹⁵N, αγ) ¹²C. In contrast to thin polycrystalline Ti-films, molecular H₂ adsorbs only with a small integral sticking coefficient on the single crystal surface even at 120 K and the H coverage saturates at 1.0 ML. Admission of atomic H at this temperature results in further hydrogen uptake, which saturates after absorption of an additional monolayer of H into subsurface sites. The H diffusion remains restricted up to240 K, causing accumulation of absorbed H in a shallow region of only7 nm depth beneath the surface under atomic H exposure conditions. With a maximum of10 at.% the H-concentration in this thin hydride overlayer remains far below the bulk solubility limit of TiH₂. Only above240 K the observed H distributions along the concentration gradient into the bulk are in agreement with extrapolated diffusion data for α-Ti.

Journal

• Shinku

  Shinku 45 (5), 458-462, 2002

  The Vacuum Society of Japan

Keywords

• Electrical and Electronic Engineering
• Surfaces, Coatings and Films
• Condensed Matter Physics

Details

• CRID: 1390282679041528576
• NII Article ID: 10008831103
• NII Book ID: AN00119871
• DOI: 10.3131/jvsj.45.458
• ISSN: 18809413
• ISSN: 05598516
• NDL BIB ID: 6193467
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6193467
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed