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Frequently Asked Questions

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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Contact Us - Frequently Asked Questions - How does the alumina coating on a tungsten boat prevent cracking and breaking during nickel thermal evaporation?