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Abstract

Three series of real time experiments have been concerned with the disintegration of UO(2) during oxidation in air at temperatures in the range 225 to 550 C. Gravimetric measurements, using a controlled atmosphere microbalance, have established the time at which powdering first occurred and the rate of subsequent continuing spallation. In-situ observations have also been made using environmental cells, with hot stages fitted respectively to an X-ray diffractometer and an optical microscope. The former have examined the chemical and the latter the topographical changes during UO(2) oxidation. The results have confirmed and extended current mechanistic understanding of the chemical and physical processes involved.

Additional information

Authors: PRICE J B, AEA Industrial Technology, Materials and Manufacturing Technology Division, Harwell Laboratory, Didcot (GB);BENNETT M J, AEA Industrial Technology, Materials and Manufacturing Technology Division, Harwell Laboratory, Didcot (GB);CULLEN F L, AEA Industrial Technology, Materials and Manufacturing Technology Division, Harwell Laboratory, Didcot (GB);NORTON J F, JRC Petten (NL);CANETOLI S R, JRC Petten (NL)
Bibliographic Reference: Paper presented: Microscopy of Oxidation, Cambridge (GB), March 27-28, 1990
Availability: Available from (1) as Paper EN 35564 ORA
Record Number: 199011177 / Last updated on: 1994-12-01
Category: PUBLICATION
Original language: en
Available languages: en
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