Submicron lamellar porous structure formed by selective dissolution of Ti-Al alloy

Dai Xiu Wei, Yuichiro Koizumi, Yunping Li, Kenta Yamanak, Akihiko Chiba

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


We created high-aspect-ratio sub-micron-sized lamellar porous structure by simple anodic selective dissolution of lamellar Ti-Al alloy in NaCl aqueous solution. The geometries of lamellar structures, which determined those of lamellar porous structure, were controlled by hot forging and subsequent ageing treatment before dissolution process. Although the changes in microstructure affected the selective dissolution behaviors, γ-TiAl phase could be dissolved selectively. As a result, the average sizes of unidirectional units of lamellar pores could be controlled in the range from to 25 μm to 500 μm. The pitches of the lamellar pores were controlled in the wide range from below 100 nm to over 1 μm.

Original languageEnglish
Pages (from-to)1-11
Number of pages11
JournalMaterials and Design
Publication statusPublished - 2016 May 15


  • Aluminum
  • Anodic dissolution
  • SEM
  • Titanium
  • XPS


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