The effects of hydrogen concentration in reducing atmosphere on microstructure of U02 fuel pellets
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Date
2000-10
Authors
Journal Title
Journal ISSN
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Publisher
Turkish Atomic Energy Authority
Abstract
In both conventional high temperature and low temperature sintering techniques, hydrogen is
used as sintering and reducing atmosphere to prepare uranium dioxide fuel pellets. It is well
known that hydrogen is a dangerous gas to work with. In this work it was aimed to investigate
the effects of low-level hydrogen concentration used in reducing atmosphere on micro structure
of U0
2 fuel pellets produced by low temperature sintering. Different ratios of H2/Ar
(0.1%H2+99.9%Ar, 0.5%H2+99.5%Ar, l%H2+99%Ar and 0%H2 (pure argon)) atmospheres
were used as reducing atmosphere for 1, 2, 3 and 6 hours. It was determined that using very
low-level hydrogen (1%) in reducing atmosphere prevents the formation of other oxides.
Description
I. Avrasya Nükleer Bilimler ve Uygulamaları Konferansı : 23-27 Ekim 2000. İzmir, Türkiye.
Keywords
Atmosphere, Atmosfer, Hydrogen concentration, Hidrojen konsantrasyonu, Microstructure, Mikroyapı, Fuel pellets, Yakıt topakları, U02
Citation
Ayaz, B., Bilge, A. N. (2000). The effects of hydrogen concentration in reducing atmosphere on microstructure of U02 fuel pellets. I. Eurasia Conference on Nuclear Science and Its Application, Presentations, Vol 1, (s. 304-309). 23-27 October 2000. İzmir, Turkey.