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102. The radiolytic graphite/CO2 reaction: inhibition by methane in the presence of carbon monoxide

✍ Scribed by J.V Best; D.A Dominey; R.S Sach; V.F Skinner; C.J Wood

Publisher
Elsevier Science
Year
1973
Tongue
English
Weight
108 KB
Volume
11
Category
Article
ISSN
0008-6223

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✦ Synopsis

684 ABSTRACTS

  1. The effect of stress on graphite in water vapour atmosphere R. Krefeld, G. Linkenheil and W. Karcher (Reactor Materials Laboratory, J.R.C. EURATOM, Petten, The Netherlands). The effect of tensile stress on the reaction CO+ Hz0 + CO+ Hz has been studied. For this purpose, specimens from four different nuclear graphites were exposed to argon atmosphere containing water vapour at 1000Β°C and were simultaneously stressed to different stress levels. A rapid initial increase of the reaction rate with stress was observed in all cases. A further increase of stress results into a different response which could be due to differences in the pore geometries causing different magnitudes of stress intensity factors. 102. The radiolytic graphite/CO, reaction: inhibition by methane in the presence of carbon monoxide J. V. Best, D. A. Dominey, R. S. Sach, I$. F. Skinner and C. J. Wood (Materials Science Division, Central Electricity Generating Board, Berkeley Nuclear Laboratories, Berkeley, Gloucestershire, England). Inhibition of the radiolytic reaction between PGA graphite and CO, by methane has been investigated at 498-648 K. Kinetic analysis of a simple mechanism leads to equations relating graphite corrosion, methane destruction and in-pore deposition to the carbon monoxide, methane and water concentrations, which agree closely with the results.

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