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Philosophical Magazine B Volume 54, 1986 - Issue 2
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Letters section

The formation of U3O8 on crystalline UO2

G. C. Allen Central Electricity Generating Board, Berkeley Nuclear Laboratories, Berkeley, Gloucestershire, GL13 9PB, England
,
P. A. Tempest Central Electricity Generating Board, Berkeley Nuclear Laboratories, Berkeley, Gloucestershire, GL13 9PB, England
&
J. W. Tyler Central Electricity Generating Board, Berkeley Nuclear Laboratories, Berkeley, Gloucestershire, GL13 9PB, England
Pages L67-L71 | Received 14 Feb 1986, Accepted 30 May 1986, Published online: 27 Sep 2006
 
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Abstract

The oxidation of the (111) surface of crystalline UO2 through U3O7 to U3O8 has been studied by X-ray photoelectron spectroscopy and X-ray diffraction. Anisotropic growth of U3O8 revealed an epitaxial relationship between the cubic close-packed (111) plane of fluorite UO2 and the (001) basal plane of orthorhombic U3O8. It is proposed that the clustering of oxygen interstitial atoms in the fluorite lattice is instrumental in its ultimate breakdown and may be identified within the network of oxygen atoms present in U3O8.

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Related Research Data

Energetics of hydration on uranium oxide and peroxide surfaces
Source: Cambridge University Press (CUP)

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