Morphological study of micropits formed by anodic etching of an Al-Pd-Mn icosahedral quasicrystal

K. Saito, T. Sasaki, S. Sugawara, J. Q. Guo, A. P. Tsai

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Faceted micropits obtained by electrochemical etching of a single quasicrystal of an Al-Pd-Mn icosahedral phase have been examined by optical and electron microscopy. Anodic etching of the flat surface of a fivefold plane in a solution composed of CH3OH and HNO3 (3:1 in volume ratio) reveals a variety of icosahedrally faceted micropits which originated from pre-existing microvoids and etch pits pentagonal pyramid shape due to the other origins, probably structural defects inside the specimen. As the dissolution progresses, the micropits make successive changes in their shapes, ending in pentagonal pyramids before they vanish.

Original languageEnglish
Pages (from-to)307-315
Number of pages9
JournalPhilosophical Magazine Letters
Volume80
Issue number5
DOIs
Publication statusPublished - 2000 May 1
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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