Direct observation of hydrogen and deuterium in oxide grain boundaries in corroded Zirconium alloys
Journal article, 2015

Atom probe tomography has been used to the study the distribution of hydrogen and deuterium in the oxide scale of two common zirconium alloys after autoclave testing in H2O and D2O, respectively. Comparison between hydrogen and deuterium in the mass spectra allows for separation of hydrogen as a corrosion product from adsorbed H2 gas from the vacuum chamber. Enrichment of hydrogen and deuterium, as OH+ and OD+, was observed in grain boundaries. The grain boundaries were identified through segregation of iron. This lends experimental support to existing theories for the mechanism of hydrogen pick-up in zirconium alloys.

Hydrogen pick-up

Deuterium

Corrosion

Zirconium alloys

Grain boundaries

Atom probe

Author

Gustav Sundell

Chalmers, Applied Physics, Materials Microstructure

Mattias Thuvander

Chalmers, Applied Physics, Materials Microstructure

A K Yatim

RWTH Aachen University

H Nordin

Atomic Energy of Canada Limited - Chalk River Lab

Hans-Olof Andrén

Chalmers, Applied Physics, Materials Microstructure

Corrosion Science

0010-938X (ISSN)

Vol. 90 1-4

Areas of Advance

Energy

Materials Science

Subject Categories

Other Materials Engineering

Corrosion Engineering

DOI

10.1016/j.corsci.2014.10.016

More information

Latest update

3/27/2018