Coated ceramic discharge vessel for improved gas tightness

摘要

The present invention relates to a discharge vessel ( 1 ) with at least one end part ( 2 ) and a discharge cavity ( 3 ), whereby the discharge vessel ( 1 ) is at least partly coated with a coating layer ( 4 ), and whereby the gas-tight bonding of the coating layer to the discharge vessel ( 1 ), to a sealant ( 5 ) and/or to an end closure member ( 9 ) is stronger compared to the direct gas-tight bonding of said sealant ( 5 ) to said end closure member ( 9 ) and/or discharge vessel ( 1 ).