Abstract
In this paper the defect structure of platinum during homogeneization quenching has been studied by transmission electron microscopy on electropolished foils. Several black dots about 100 Å in diameter have been observed on the foils, corresponding to a density of the order of 1014 −3. The dots have been interpreted as clusters of vacancies retained in the presence of impurities. The analysis of the number of quenched-in vacancies leads to the conclusion that the clusters are spherical and about 110 Å in diameter.
In contrast to copper no dislocation density growth with the number of quenchings could be observed as the dislocation density is less than 108 cm−2, which could not be detected exactly enough by the electron microscope method.
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The authors are indebted to K. Míšek (Institute of Solid State Physics, Czechosl. Acad. Sci., Prague) and J. Polák (Institute of Metallurgy, Czechosl. Acad. Sci., Brno) for valuable remarks on the manuscript.
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Čížek, A., Pařízek, F., Orlová, A. et al. The homogeneization quenching of platinum. Czech J Phys 20, 56–62 (1970). https://doi.org/10.1007/BF01698107
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DOI: https://doi.org/10.1007/BF01698107