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Influence of Al2O3 Nanoparticles on the Thermal Stability of Ultra-Fine Grained Copper Prepared by High Pressure Torsion

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Nanostructured Materials

Summary

Ultra-fine grained (UFG) Cu (grain size 80 nm) containing 0.5wt.% Al2O3 nanoparticles (size 20 nm) was prepared by high pressure torsion (HPT). Positron lifetime spectroscopy was employed to characterize the microstructure of this material, especially with respect to types and concentration of lattice defects. The evolution of microstructure with increasing temperature was studied by positron lifetime spectroscopy and X-ray diffraction measurements. The thermal stability of the Cu + 0.5 wt.% Al2O3 nanocomposite was compared with that of pure UFG Cu prepared by the same technique. The processes taking place during thermal recovery of the initial nanoscale structure in both studied materials are described.

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Author information

Author notes

  1. Jakub Čížek

    Present address: Institut für Materialphysik, Universität Göttingen, D-37073, Göttingen, Germany

Authors and Affiliations

  1. Faculty of Mathematics and Physics, Charles University, CZ-18000, Prague, Czech Republic

    Jakub Čížek, Ivan Procházka & Radomír Kužel

  2. Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, Ufa, 450000, Russia

    Rinat K. Islamgaliev

Authors
  1. Jakub Čížek
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  2. Ivan Procházka
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  3. Radomír Kužel
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  4. Rinat K. Islamgaliev
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Editor information

Editors and Affiliations

  1. Département des Matériaux, École Polytechnique Fédéral Lausanne, Lausanne, Switzerland

    Heinrich Hofmann (Chairman of COST 523) (Chairman of COST 523)

  2. Department of Physics, Magnetics Research Laboratory, University of Limerick, Limerick, Ireland

    Zakia Rahman

  3. Institute of Materials Chemistry, Vienna University of Technology, Vienna, Austria

    Ulrich Schubert

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© 2002 Springer-Verlag Wien

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Čížek, J., Procházka, I., Kužel, R., Islamgaliev, R.K. (2002). Influence of Al2O3 Nanoparticles on the Thermal Stability of Ultra-Fine Grained Copper Prepared by High Pressure Torsion. In: Hofmann, H., Rahman, Z., Schubert, U. (eds) Nanostructured Materials. Springer, Vienna. https://doi.org/10.1007/978-3-7091-6740-3_13

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  • DOI: https://doi.org/10.1007/978-3-7091-6740-3_13

  • Publisher Name: Springer, Vienna

  • Print ISBN: 978-3-7091-7398-5

  • Online ISBN: 978-3-7091-6740-3

  • eBook Packages: Springer Book Archive

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