Method of making refractory metal-ceramic crucible
AssigneeGTE Sylvania Incorporated
InventorEdward D. Parent
Life of this patent
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Abstract
A crucible for containing metal to be evaporated for vacuum deposition is manufactured by winding refractory metal wire into the shape of a helical basket coil. The coil is electrophoretically coated with a primer coat of alumina and is then flame or plasma sprayed with alumina to form the crucible.
Claims2
A method of making a refractory metal-ceramic crucible comprising the steps of winding refractory metal wire into the shape of a helical basket coil, electrophoretically coating the coil with a primer coat of alumina, firing the primer coat, and flame spraying or plasma spraying sufficient alumina on the primer coated coil to form a crucible capable of containing molten metal.
Dependencies are inferred from the claim text.