Click image to view full size image
The tungsten boats, baskets and filaments are manufactured from high grade tungsten. Tungsten has the highest melting point (6192°F), the lowest vapor pressure at temperatures above 3000°F and has the highest tensile strength. Tungsten also has the lowest coefficient of thermal expansion of any pure metal. This combination of properties makes tungsten the ideal material for evaporation sources. During evaporation, it can alloy with some materials such as Al or Au. In this case, another evaporation source material should be used such as alumina coated boats or baskets. Other materials useful for evaporation sources are molybdenum and tantalum.
Materials: tungsten boat, molybdenum boat, or tantalum boat
Thicknesses: .005, .010, 0.15, .020, or custom sizes
Evaporation Boats are capable of depositing a wide variety of materials. T&D offers an extensive selection of standard tungsten boats, tantalum boats and molybdenum boats as well as custom fabrication to meet your specific evaporation source needs. All of our evaporation boats are available in a variety of materials and thicknesses. If you need help in selecting the right boat for your process, please give our technical staff a call.
http://www.tdmfginc.com/