Positron spectroscopy of defects in hydrogen-saturated Zirconium

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

2 Цитирования (Scopus)

Аннотация

Zirconium alloys, such as Zr-1Nb are widely used as cladding materials for nuclear fuel elements of light water reactors. Hydrogen embrittlement problem causes degradation of these parts of nuclear reactors. It is known, that hydrogen uptake causes changes in microstructure and defect structure of metals. The aim of this work is study of Zr-1Nb alloys' defect structure after hydrogen saturation up to the concentration of 600 ppm. Saturation of hydrogen was carried out from the gas phase under high temperature and pressure. This study reveals the increase of average positron lifetime with the increase of hydrogen concentration. Value of the average positron lifetime achieves plateau when the concentration of hydrogen is about 600 ppm. Also the following effects were detected in the material after hydrogen uptake up to different concentrations: crystal lattice expansion, dislocations and vacancy-like defects formation, as well as the defect-hydrogen complexes formation.

Язык оригиналаАнглийский
Название основной публикацииPositron Annihilation - ICPA-17
ИздательTrans Tech Publications Ltd
Страницы138-141
Число страниц4
Том373 DDF
ISBN (печатное издание)9783038356059
DOI
СостояниеОпубликовано - 2016
Событие17th International Conference onPositron Annihilation, ICPA-17 - Wuhan, Китай
Продолжительность: 20 сен 201625 сен 2016

Серия публикаций

НазваниеDefect and Diffusion Forum
Том373 DDF
ISSN (печатное издание)1012-0386

Конференция

Конференция17th International Conference onPositron Annihilation, ICPA-17
СтранаКитай
ГородWuhan
Период20.9.1625.9.16

ASJC Scopus subject areas

  • Radiation
  • Materials Science(all)
  • Condensed Matter Physics

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