The Alumina Coated Tungsten Wire Baskets for GSL-1100X-SPC-15E-LD and GSL-1800X-SBC2-LD. The evaporation basket is an efficient design which acts as an internally heated crucible. The ceramic coated evaporation baskets for vacuum evaporation have the distinct advantage that they require relatively low power (63 to 768 W) to reach a temperature of 1475°C (high enough to evaporate Ni in the high vacuum). A broad range of evaporation materials can be used in these alumina coated sources: Au, Ag, Pd, In, Sn, Sb, Bi, Cd, Cu, Pb, Zn, Co, Ni, Fe, Mn and alloys such as Nichrome and Permalloy.
• The tungsten basket is manufactured from high-grade tungsten. Of all metals pure form, tungsten has the highest melting point (3422°C / 6192°F), the lowest vapor pressure at temperatures above 1650°C (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.
• We also offer a wide range of evaporation materials. Please contact us for detail.
