Surface studies on uranium monocarbide using XPS and SIMS

Asuvathraman, R and Rajagopalan, S and Ananthasivan, K and Mathews, CK and Mallya, RM (1995) Surface studies on uranium monocarbide using XPS and SIMS. In: Journal of Nuclear Materials, 224 (1). 25-30 .

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Abstract

The air-exposed surfaces of sintered and are-melted UC samples were examined by XPS and SIMS. XPS results indicate that the surface is covered with a very thin layer of UO2 mixed with free carbon, which would have formed along with the oxide during the reaction between UC and oxygen or moisture. From the SIMS depth profile of oxygen, the thickness of the oxide layer is found to be approximately 10 nm. The SIMS oxygen images of the surface as a function of etching time reveal that the surface of UC consists of a top layer of adsorbed moisture/oxygen; this contamination layer is followed by a layer containing uranium oxide, uranium hydroxide and free carbon and then grain boundary oxide and finally bulk UC. The behaviour of sintered and are-melted samples is similar.

Item Type:	Journal Article
Publication:	Journal of Nuclear Materials
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	26 May 2011 06:01
Last Modified:	26 May 2011 06:01
URI:	http://eprints.iisc.ac.in/id/eprint/37937

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