Patent ID: 7494616
Filing Date: 2009-02-24
Classification: C23C,F27D

Abstract:
1. A refractory container for evaporating metals having: an electrically conductive compound that is selected from the group consisting of titanium diboride, zirconium diboride, titanium nitride, silicon carbide, chromium carbide, compounds, derivatives, and mixtures thereof; a non-electrically-conductive compound that is selected from the group consisting of yttrium oxide and calcium oxide; an evaporation surface in contact with molten metal; the refractory container having a direction of conduction parallel to a length axis of the refractory container; the refractory container having a plurality of grooves in the evaporation surface; the refractory container is characterized in that the plurality of grooves each having at least one of: at least two of the grooves have at least 20% of length at an angle of 10 to 170 degrees to the direction of electrical conduction of the refractory container.