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An Investigation of Point Defects in NiAl Using Positron Annihilation Techniques

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Abstract

Vacancy-like defects in NiAl in the composition range 47 at.-% < CNi < 53 at.-% are investigated by means of positron lifetime spectroscopy and Doppler-broadening measurements. The observed lifetimes in the annealed samples confirm that defects are quenched-in during the production of the samples. Isochronal annealing of samples quenched at 1600°C and after proton irradiation show that the induced defects are quite different.

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Authors and Affiliations

  1. Institut für Technische Physik, Technische Universität Graz, Petersgasse 16, A-8010, Graz, Austria

    Werner Puff & Bernd Logar

  2. FB Materialwissenschaft, FG Dünne Schichten, Technische Hochschule Darmstadt, Petersenstraße 23, 64287, Darmstadt, Germany

    Adam G. Balogh

Authors
  1. Werner Puff
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  2. Bernd Logar
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  3. Adam G. Balogh
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Correspondence to Werner Puff.

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Puff, W., Logar, B. & Balogh, A.G. An Investigation of Point Defects in NiAl Using Positron Annihilation Techniques. MRS Online Proceedings Library 552, 861 (1998). https://doi.org/10.1557/PROC-552-KK8.6.1

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  • DOI: https://doi.org/10.1557/PROC-552-KK8.6.1

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