upon Tyne, New castle upon Tyne, NE1 7RU, England). The kinetics of gasification by molecular oxygen of a heat treatment series (1200-3200ยฐK) of a graphitizing carbon prepared from polyvinyl acetate have been studied in the temperature range 750-1000ยฐK. A correspondence between the activation energy
Development of the pore structure of graphite by radiolytic oxidation in COCO2
โ Scribed by B.T. Kelly; B.W. Ashton; R. Lind; V.Y. Labaton
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- English
- Weight
- 131 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0008-6223
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โฆ Synopsis
The characterization of property changes in various grades of near-isotropic, "binderless" grades of graphite as functions of fluence accumulated at 715ยฐC from 0 to 42 x 10" neutrons/cm' (E > 50 keV) was made. Generally, the average coefficients of thermal expansion (CTE) from 20 to 600ยฐC and the roomtemperature values for strengths, fracture strains, Young's moduli, shear moduli, and calculated figures of merit (FOM) for resistance to thermal shock all ultimately decreased with fluence.
๐ SIMILAR VOLUMES
A study has been made of the effect of radiolytic oxidation by carbon dioxide on the porosity of 'A' grade pile graphite ('P.G.A.') and also a material of lower initial porosity designated CPsRsG. Use of in-pile rigs operated at 735 lb/in\* (gauge) enables weight losses up to 29% to be obtained. Res
The radiolytic oxidation of graphite in carbon dioxide cooled nuclear reactors is of great practical importance, but direct measurements of the oxidation of pores are very difficult. Progress has recently been made by studying the changes in permeability of graphite and the diffusivity ratio with ox