Dissolution patterns caused by etching of low-indexed surfaces of Al-Pd-Mn icosahedral and Al-Cu-Co decagonal quasicrystals

K. Saito, Y. Saito, S. Sugawara, J. Q. Guo, A. P. Tsai, Y. Kamimura, K. Edagawa

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Dissolution patterns caused by anodic etching of an Al-Pd-Mn icosahedral quasicrystal and chemical etching of an Al-Cu-Co decagonal quasicrystal were examined by optical and electron microscopy as well as by atomic force microscopy. Appropriate etching treatments of these quasicrystals, i.e. the anodic etching of the Al-Pd-Mn quasicrystal in a solution of CH3OH-HNO3, and the chemical etching of the Al-Cu-Co quasicrystal in a solution of HF-HNO3-H2O resulted in occurrence of dissolution patterns composed of a number of well-facetted micropits (and hillocks for the Al-Cu-Co alloy as well) on low-indexed surfaces of the specimens. The morphological features of these etch-figures are discussed in relation to the internal structural symmetries.

Original languageEnglish
Pages (from-to)45-48
Number of pages4
JournalJournal of Alloys and Compounds
Volume342
Issue number1-2
DOIs
Publication statusPublished - 2002 Aug 14
Externally publishedYes

Keywords

  • AFM
  • Al-Cu-Co
  • Al-Pd-Mn
  • Decagonal phase
  • Etch hillock
  • Etch pit
  • Icosahedral phase
  • SEM

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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