Positron lifetime and Doppler broadening of annihilation gamma-line measurements in neutron irradiated chromium

Troev, T.; Mincov, I.; Shofan, A.; Angelov, Ch.

doi:10.1016/0375-9601(89)90509-4

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Cited by 2 publications

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“…This explains the computed longer positron lifetime value. The calculated value of the positron lifetime in chromium is supported by the experimental value reported earlier in the literature [4]. The computed positron lifetime in chromium matrix without vacancy has a value of 103 ps, the experimental ones is 108 ps [4].…”

Section: Resultsmentioning

confidence: 78%

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Positron lifetime calculations of defects in chromium containing hydrogen or helium

Troev

Markovski

Peneva

et al. 2006

Journal of Nuclear Materials

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Section: Resultsmentioning

confidence: 78%

“…At elevated temperatures point defects gather into clusters and the vacancies grow into the nano-voids. The properties of point defects in 14 MeV neutron irradiated chromium have been the subject of the paper of Troev et al [4]. Chromium (3d 5 4s 1 ) has bcc lattice.…”

Section: Introductionmentioning

confidence: 99%

Positron lifetime calculations of defects in chromium containing hydrogen or helium

Troev

Markovski

Peneva

et al. 2006

Journal of Nuclear Materials

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A multimodal approach to revisiting oxidation defects in Cr2O3

et al. 2022

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The oxidation of chromium in air at 700 °C was investigated with a focus on point defect behavior and transport during oxide layer growth. A comprehensive set of characterization techniques targeted characteristics of chromium oxide microstructure and chemical composition analysis. TEM showed that the oxide was thicker with longer oxidation times and that, for the thicker oxides, voids formed at the metal/oxide interface. PAS revealed that the longer the oxidation time, there was an overall reduction in vacancy-type defects, though chromium monovacancies were not found in either case. EIS found that the longer oxidized material was more electrochemically stable and that, while all oxides displayed p-type character, the thicker oxide had an overall lower charge carrier density. Together, the results suggest anion oxygen interstitials and chromium vacancy cluster complexes drive transport in an oxidizing environment at this temperature, providing invaluable insight into the mechanisms that regulate corrosion.

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Positron lifetime and Doppler broadening of annihilation gamma-line measurements in neutron irradiated chromium

Cited by 2 publications

References 5 publications

Positron lifetime calculations of defects in chromium containing hydrogen or helium

Positron lifetime calculations of defects in chromium containing hydrogen or helium

A multimodal approach to revisiting oxidation defects in Cr2O3

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