PlumX Metrics
Embed PlumX Metrics

Formation and evolution of nanoporous dendrites during dealloying of a ternary Al-Ag-Au precursor

CrystEngComm, ISSN: 1466-8033, Vol: 16, Issue: 3, Page: 479-485
2014
  • 11
    Citations
  • 0
    Usage
  • 7
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    11
    • Citation Indexes
      11
  • Captures
    7

Article Description

Formation and evolution of nanoporous dendrites during dealloying of a ternary Al-Ag-Au precursor have been investigated using X-ray diffraction, scanning electron microscopy and energy dispersive X-ray analysis. The rapidly solidified Al65Ag22.75Au12.25 precursor is composed of equiaxed Al2(Au,Ag) dendrites which uniformly distribute in a lamellar α-Al-Ag2Al eutectic matrix. The kind of solution has a significant influence on the dealloying of Al65Ag 22.75Au12.25. The dealloying of α-Al-Ag 2Al eutectic in the HCl solution leads to the formation of nanoporous Ag (np-Ag), but the Al2(Au,Ag) phase cannot be dealloyed. Nanoporous AgAu (np-AgAu) alloys with bimodal channel size distributions can be fabricated through a two-step dealloying of Al65Ag22.75Au 12.25. The further dealloying of np-AgAu in a concentrated HNO 3 solution results in the formation of nanoporous Au (np-Au). Moreover, the dendrite morphology can be retained in the as-dealloyed samples during the multi-step dealloying. Through the dealloying strategy, we can fabricate novel np-AgAu and np-Au ribbons composed of nanoporous dendrites. © The Royal Society of Chemistry.

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know