Ceramic evaporator boats, processes for their preparation and their use

摘要

The invention relates to an evaporator boats made of electrically conductive ceramic material for the evaporation of metal, characterized in that, in the evaporator function area, of which the evaporation of the metal takes place, one or more flow-guide channels a width of at least 1,5 mm and a depth of up to 3 mm are provided, wherein at least one of the boundary surfaces of the flow-guide channels wetting is modified so as to convey.The evaporator boats according to the invention exhibit an excellent exhaust steam power and / or an increased service life.