The alumina acts as a barrier between the nickel and the tungsten, thus prolonging the life of the boat and increasing the amount of nickel deposition. Instead of wetting the boat, the nickel will form a ball on top of the alumina coating once it melts. These boats will fail often, lasting approximately 1-3 runs. Due to alumina’s limited heat conduction abilities, more power will be required to achieve evaporation.
Category: Evaporation Sources
Sub-Category: Crucibles and Crucible Heaters
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