Electron Channelling Enhanced Microanalysis on Ni-Al-Mn and Al-Mn-Si

Daisuke Shindo, Kenji Hiraga, Takayuki Takasugi, An Pang Tsai

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Atom location by channelling enhanced microanalysis (ALCHEMI) was performed for Ni-Al-Mn compounds and Al-Mn-Si quasicrystals. For Ni75Al25-xMnx (x=5, 9) with the L12-type structure, an occupation fraction of Mn atoms at the Ni site was quantitatively determined using planar channelling conditions. The occupation fraction increases with the Mn concentration or by quenching the compound from high temperature. In quasicrystals of Al74Mn20Si6 and Al68Mn20Ru8Si4, axial channelling conditions were used to locate Si and Ru, respectively. It was shown that Si atoms occupy the Al site in Al74Mn20Si6 whereas Ru atoms occupy the site different from that of Al in Al68Mn20Ru8Si4.

Original languageEnglish
Pages (from-to)647-651
Number of pages5
JournalMaterials Transactions, JIM
Volume31
Issue number7
DOIs
Publication statusPublished - 1990

Keywords

  • NiAl
  • atom location by channelling enhanced microanalysis
  • energy dispersive X-ray spectrometer
  • quasicrystal
  • site determination
  • substitutional occupation

ASJC Scopus subject areas

  • Engineering(all)

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