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Effect of Leaching on Surface Microstructure and Chemical Composition of Al-Based Quasicrystals

  • T. P. Yadav
  • M. Lowe
  • R. Tamura
  • R. McGrath
  • H. R. Sharma

Abstract

We have studied the effect of leaching treatments on the surface microstructure and chemical composition of Al-based quasicrystals. The high symmetry surfaces of single grain icosahedral (i-) Al–Cu–Fe and decagonal (d-) Al–Ni–Co quasicrystals and a polygrain i-Al–Pd–Re quasicrystal with random surface orientation were leached with NaOH solution at varying times and the resulting surfaces were characterized by scanning electron microscopy, energy dispersive X-ray analysis and X-ray photoelectron spectroscopy. The leaching treatments preferentially remove Al producing nanoparticles of the transition metals and their oxides. The leached fivefold surface of i-Al–Cu–Fe exhibits micron sized dodecahedral cavities on which the nanoparticles are precipitated. However, no specific microstructure has been observed on the tenfold surface of d-Al–Ni–Co and the polygrain i-Al–Pd–Re. The quasicrystalline surface can be regained after polishing the leached layer, indicating that leaching occurs only in a limited depth from the surface. This was revealed by low energy electron diffraction after the surface was prepared under ultra high vacuum conditions. These results provide important information for preparation of model catalysts of nanoparticles of catalytically active metals on quasicrystal surfaces.

Keywords

Spark Plasma Sinter Ultra High Vacuum Model Catalyst Show Scanning Electron Microscopy Image Icosahedral Quasicrystal 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

H.R.S. is grateful to Engineering and Physical Sciences Research Council (EPSRC) for funding (Grants No. EP/D071828/1). T.P.Y. thanks the Department of Science and Technology (DST)-India for BOYACAST fellowship for this work. M.L. is grateful to EPSRC for support through Doctoral Training Grant. The authors would like to thank Dr. T. Joyce in the University of Liverpool for SEM facility. The quasicrystal samples were grown by T.A. Lograsso and A.R. Ross in Ames Laboratory, Iowa State University, USA. We thank A.P. Tsai in Tohoku University and V. Fournée and J. Ledieu at CNRS Nancy for fruitful discussions and J. Smerdon for critical reading of the manuscript.

References

  1. 1.
    Shechtman D, Bleeh I, Gratias D, Cahn JW (1984) Phys Rev Lett 53:1951–1953 CrossRefGoogle Scholar
  2. 2.
    Stadnik Z (1999) Physical properties of quasicrystals. Springer series in solid state sciences, vol 126. Springer, Berlin CrossRefGoogle Scholar
  3. 3.
    Dubois J (2011) Isr J Chem 51:1168 CrossRefGoogle Scholar
  4. 4.
    Tsai AP, Yoshimura M (2001) Appl Catal A, Gen 214:237 CrossRefGoogle Scholar
  5. 5.
    Yoshimura M, Tsai AP (2002) J Alloys Compd 342:451 CrossRefGoogle Scholar
  6. 6.
    Ngoc B, Geantet C, Aouine M, Bergeret G, Raffy S, Marlin S (2008) Int J Hydrog Energy 33:1000 CrossRefGoogle Scholar
  7. 7.
    Jenk C, Thiel P (1998) J Mol Catal A, Chem 131:301 CrossRefGoogle Scholar
  8. 8.
    Kameoka S, Tanabe T, Tsai AP (2004) Catal Today 93–95:23 CrossRefGoogle Scholar
  9. 9.
    Tanabe T, Kameoka S, Tsai AP (2006) Catal Today 111:153 CrossRefGoogle Scholar
  10. 10.
    Tanabe T, Kameoka S, Tsai AP (2010) Appl Catal A, Gen 384:241 CrossRefGoogle Scholar
  11. 11.
    Tanabe T, Kameoka S, Tsai AP (2011) J Mater Sci 46:2242 CrossRefGoogle Scholar
  12. 12.
    Fisher IR, Kramer M, Islam Z, Ross R, Kracher A, Weiner T, Sailer M, Goldman A, Canfield P (1999) Philos Mag B 79:425 CrossRefGoogle Scholar
  13. 13.
    Tamura R, Yadav T, McGrath R, Sharma H (2012) Phys Rev B, submitted Google Scholar
  14. 14.
    Tsai AP, Inoue A, Masumoto T (1987) Jpn J Appl Phys 26:1505–1507 CrossRefGoogle Scholar
  15. 15.
    Rouxel D, Gil-Gavatz M, Pigeat P, Weber B (2005) J Non-Cryst Solids 351:802 CrossRefGoogle Scholar
  16. 16.
    Cappello G, Schmithusen F, Chevrier J, Comin F, Stierle A, Formoso V, de Boissieu M, Bourdard M, Lograsso T, Jenks C et al. (2000) Mater Sci Eng A 294–296:822 Google Scholar
  17. 17.
    Suzuki S, Waseda Y, Urban K (1998) Mater Trans, JIM 39:314 Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • T. P. Yadav
    • 1
  • M. Lowe
    • 1
  • R. Tamura
    • 2
  • R. McGrath
    • 1
  • H. R. Sharma
    • 1
  1. 1.Surface Science Research Centre and Department of PhysicsThe University of LiverpoolLiverpoolUK
  2. 2.Department of Materials Science and TechnologyTokyo University of ScienceNodaJapan

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