Process for the production of graphite molded articles of high isotropy and high heat conductivity
AssigneeHOBEG Hochtemperaturreaktor-Brennelement GmbH
InventorsHans Huschka, Franz-Josef Herrmann
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Abstract
Graphite or carbon molded articles of high isotropy and high heat conductivity, especially useful for high temperature reactor fuel elements are prepared by pressing a mixture of a binder and a powdery carbon filler which consists partially or wholly of pyrolytically produced isotropic carbon with subsequent heat treatment of the pressed article. There is used as the filler an isotropic pyrolytic carbon made by depositing a hydrocarbon on a carbon granulate and then grinding to a particle size of less than 100 .mu.m.
Claims12
A process of preparing an article containing isotropic pyrolytic carbon particles of high heat conductivity as a filler comprising pyrolyzing a hydrocarbon gas on isotropic carbon granulates to form a deposit of isotropic pyrolytic carbon on the isotropic carbon granulates having a particle size above 100.mu.m, then grinding to form an isotropic carbon powder having a particle size below 100.mu.m and an average particle size larger than 5.mu.m, mixing a binder with the powder filler and then molding an article therefrom.
Dependencies are inferred from the claim text.