Vacancy-solute binding energies in aluminum by positron annihilation

H. Ohkubo, Y. Nagai, K. Inoue, Z. Tang, M. Hasegawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

To obtain vacancy-solute binding energies in Al, we employed coincidence Doppler broadening (CDB) method of positron annihilation at high temperatures. By measuring the elemental specific momentum distribution of core electrons in high momentum region, we tried to observe directly vacancy-solute complexes in thermal equilibrium states. However, in the case of a dilute Al-Zn alloy, no vacancy-Zn complex was detected within an experimental accuracy, strongly suggesting that the binding energies are vanishingly small. The small binding energies are consistent with the previous thermal equilibrium experiments, but not with the quenching ones.

Original languageEnglish
Title of host publicationPositron Annihilation
Subtitle of host publicationProceedings of the 13th International Conference on Positron Annihilation, ICPA-13
EditorsToshio Hyodo, Haruo Saito, Yoshinori Kobayashi, Yasuyuki Nagashima
PublisherTrans Tech Publications Ltd
Pages165-167
Number of pages3
ISBN (Print)9780878499366
DOIs
Publication statusPublished - 2004
EventPositron Annihilation: Proceedings of the 13th International Conference on Positron Annihilation, ICPA-13 - Kyoto, Japan
Duration: 2003 Sep 72003 Sep 12

Publication series

NameMaterials Science Forum
Volume445-446
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

OtherPositron Annihilation: Proceedings of the 13th International Conference on Positron Annihilation, ICPA-13
Country/TerritoryJapan
CityKyoto
Period03/9/703/9/12

Keywords

  • Al Alloy
  • Coincidence Doppler Broadening
  • Positron Annihilation
  • Thermal Vacancies
  • Vacancy-Solute Binding Energy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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