Structure of zircaloy-4 oxides formed during autoclave corrosion

Benoit De Gabory, Arthur Thompson Motta

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

The extent of waterside corrosion of zirconium alloy fuel cladding is a strong function of the specific alloy used. To rationalize the details of the corrosion kinetics obtained during autoclave corrosion of alloys, a Transmission Electron Microscope (TEM) study of Zircaloy-4 oxide structures is performed at various stages of corrosion. Using focused ion beam (FIB), TEM samples were lifted out of the oxide layer at precise locations in the oxide, or near the oxide/metal interface. The study characterizes the oxide grain size and morphology, oxide texture, incorporation of metallic precipitates and the evolution of these with respect to the distance to the oxide/metal interface. Special attention was given to the oxide/metal interface to determine the phases present, and measure the evolution of oxygen content in the oxide precursor layers. Results show that the oxide is mainly monoclinic, with a small fraction of tetragonal phase, with a preponderance of columnar oxide grains, which extend to the oxide/metal interface. The interface exhibits both an intermediate layer and a discontinuous layer of "blocky" grains on the metal matrix side, which change upon transition and which could be identified with suboxide phases, corresponding to a level of higher oxygen content.

Original languageEnglish (US)
Title of host publicationLWR Fuel Performance Meeting, Top Fuel 2013
PublisherAmerican Nuclear Society
Pages963-970
Number of pages8
ISBN (Print)9781629937212
StatePublished - Jan 1 2013
EventLWR Fuel Performance Meeting, Top Fuel 2013 - Charlotte, NC, United States
Duration: Sep 15 2013Sep 19 2013

Publication series

NameLWR Fuel Performance Meeting, Top Fuel 2013
Volume2

Other

OtherLWR Fuel Performance Meeting, Top Fuel 2013
CountryUnited States
CityCharlotte, NC
Period9/15/139/19/13

Fingerprint

Autoclaves
Corrosion
Oxides
Metals
Electron microscopes
Zirconium alloys
Oxygen
Focused ion beams
Precipitates
Textures

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Fuel Technology

Cite this

De Gabory, B., & Motta, A. T. (2013). Structure of zircaloy-4 oxides formed during autoclave corrosion. In LWR Fuel Performance Meeting, Top Fuel 2013 (pp. 963-970). (LWR Fuel Performance Meeting, Top Fuel 2013; Vol. 2). American Nuclear Society.
De Gabory, Benoit ; Motta, Arthur Thompson. / Structure of zircaloy-4 oxides formed during autoclave corrosion. LWR Fuel Performance Meeting, Top Fuel 2013. American Nuclear Society, 2013. pp. 963-970 (LWR Fuel Performance Meeting, Top Fuel 2013).
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De Gabory, B & Motta, AT 2013, Structure of zircaloy-4 oxides formed during autoclave corrosion. in LWR Fuel Performance Meeting, Top Fuel 2013. LWR Fuel Performance Meeting, Top Fuel 2013, vol. 2, American Nuclear Society, pp. 963-970, LWR Fuel Performance Meeting, Top Fuel 2013, Charlotte, NC, United States, 9/15/13.

Structure of zircaloy-4 oxides formed during autoclave corrosion. / De Gabory, Benoit; Motta, Arthur Thompson.

LWR Fuel Performance Meeting, Top Fuel 2013. American Nuclear Society, 2013. p. 963-970 (LWR Fuel Performance Meeting, Top Fuel 2013; Vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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De Gabory B, Motta AT. Structure of zircaloy-4 oxides formed during autoclave corrosion. In LWR Fuel Performance Meeting, Top Fuel 2013. American Nuclear Society. 2013. p. 963-970. (LWR Fuel Performance Meeting, Top Fuel 2013).