Free Access
Microsc. Microanal. Microstruct.
Volume 3, Number 1, February 1992
Page(s) 35 - 44
Microsc. Microanal. Microstruct. 3, 35-44 (1992)
DOI: 10.1051/mmm:019920030103500

EELS characterization of zirconium hydrides

On Ting Woo1 et Graham J. C. Carpenter2

1  AECL Research, Chalk River Laboratories, Chalk River, Ontario, Canada K0J 1J0
2  MTL/CANMET, Energy, Mines and Resources Canada, 568 Booth Street, Ottawa, Ontario, Canada K1A 0G1

The energy of the first plasmon loss peak has been determined for the ∈-Zr hydride phase in pure Zr. The peak energy is sufficiently different from that of the δ-hydride to permit EELS "fingerprinting" with ease using a parallel EELS system, but with greater difficulty using serial EELS, because of drift associated with the slower collection rates. Experiments on Zr-2.5Nb alloys showed that the hydride phases can also be distinguished using EELS, facilitating the analysis of hydride precipitates and blisters in nuclear reactor pressure tubes.

0778 - Electron, positron, and ion microscopes; electron diffractometers.
7920U - Electron energy loss spectroscopy.

Key words
Electron energy loss spectra -- Epsilon phase -- Plasmons -- Zirconium hydrides -- Transition element compounds -- Microstructure -- Binary alloys -- Zirconium base alloys -- Niobium alloys -- Zr-2,5Nb

© EDP Sciences 1992