Metal carbide spherules encapsulated within a pyrolytic carbon shell
Abstract
Abstract A PROCESS FOR PRODUCING NUCLEAR FUEL PARTICLES HAVING A FISSIONABLE METAL CARBIDE SHELL HAVING AN INNER DIAMETER PROTECTIVE PYROLYTIC CARBON SHELL HAVING AN INNER DIAMETER GREATER THAN THE OUTER DIAMETER OF THE ENCLOSED SPHERULE WHICH COMPRISES DEPOSITING A LAYERR OF ALUMINUM OXIDE ON A FISSIONABLE METAL CARBIDE SPHERULE, PYROLYZING A HYDROCARBON GAS ANDDEPOSITING THE PYROLYTIC CARBON THEREBY PRODUCED SO AS TO FORM A SUBSTANTIALLY UNIFORM POROUS COATING ON THE ALUMINUM OXIDE LAYER, AND THEN HEATING THE COATED PARTICLE SO AS TO VOLATILIZE AND DIFFUSE THE ALUMINUM OXIDE LAYER THROUGH THE POROUS CARBON COATING, LEAVING A VOID BETWEEN SUCH COATING AND THE METAL CARBIDE SPHERULE. AFTER THE ALUMINUM OXIDE LAYER HAS BEEN DIFFUSED THROUGH THE POROUS PYROLYTIC CARBON COATING, A DENSER HIGH-STRENGTH PROTECTIVE COATING OF PYROLYTIC CARBON CAN BE APPLIED TO THE SPHEROID.
Inventors
- 👤 D Schulz
- 👤 C Turner
Bibliographic Details
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