Dynamics of hydrogen accumulation and radiation-stimulated release from steels

Research output: Contribution to journalArticle

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Abstract

Hydrogen accumulation during electrolytic saturation of 12Kh18N10T and 12Kh12M1BFR steels, as well as during thermally and radiation-stimulated hydrogen release from the same materials, was studied. It was shown that there is a critical hydrogen concentration in the sample, which is reached in 50 h for this saturation method (1 M H2SO4 electrolyte, current density is 0.5 A/cm2). Initially, hydrogen is trapped at low-temperature (400-500°C) traps of several types in surface layers. At saturation times of 50 h and longer, hydrogen penetrates to high-temperature (800-900°C) traps in the sample bulk. Under electron irradiation of saturated samples, the hydrogen yield nonlinearly increases with electron current density and energy above 40 keV. It was concluded that electronic processes (Auger process and plasmon excitation) play a dominant role in hydrogen diffusion and desorption activation.

Original languageEnglish
Pages (from-to)236-240
Number of pages5
JournalJournal of Surface Investigation
Volume4
Issue number2
DOIs
Publication statusPublished - 1 Apr 2010

Fingerprint

Steel
Hydrogen
Radiation
Current density
Electron irradiation
Electrolytes
Desorption
Chemical activation
Temperature
Electrons

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

Cite this

Dynamics of hydrogen accumulation and radiation-stimulated release from steels. / Nikitenkov, N. N.; Khashkhash, A. M.; Tyurin, Yu I.; Chernov, I. P.; Lider, A. M.

In: Journal of Surface Investigation, Vol. 4, No. 2, 01.04.2010, p. 236-240.

Research output: Contribution to journalArticle

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AU - Lider, A. M.

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