If using a crucible to thermally evaporate gold, we recommend an alumina crucible along with a shielded, tantalum crucible heater such as our EVCH1 or EVCH10 with EVC9AO if using a KJLC® system. Great care must be taken when installing the heater to prevent the outer shields from becoming warped which can cause a short in the heater, causing the welded joints to fail. The heater should be centered between the contacts and the outer shielding must be clear of the leads. Crucibles should be stored in a cool, dry place and always handled with gloves or forceps.
Correct - crucible heater centered, Incorrect - crucible heater off-center,
outer shielding clear of leads shielding in contact with leads/inner shielding
Category: Evaporation Sources
Sub-Category: Crucibles and Crucible Heaters