ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Steady-state and transient gas diffusion measurements are reported for two series of specimens of AGR moderator graphite. One series had been oxidized radiolytically in a coolant atmosphere in the BFB experiments at Grenoble; the other series had been oxidized thermally in air at ∼ 425° C. The evolution of pore structure with oxidation is followed for each series, and in particular, the changes in restricted-access pore (RAP) volume are determined. The results, together with previous data, indicate that thermal oxidation of the gilsocarbon graphite leads to a rapid increase in RAP volume due to the opening up of closed pores. In contrast, radiolytic oxidation leads to a relatively slow growth in RAP volume due mainly to the oxidation of existing RAPs in which the coolant's methane inhibitor is substantially depleted.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00560648
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