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Molybdenum Evaporation Material (Mo)

Molybdenum Evaporation Material (Mo)
Material Type Molybdenum
Symbol Mo
Atomic Weight 95.96
Atomic Number 42
Color/Appearance Grey, Metallic
Thermal Conductivity 139 W/m.K
Melting Point (°C) 2,617
Coefficient of Thermal Expansion 4.8 x 10-6/K
Theoretical Density (g/cc) 10.2
Z Ratio 0.257
E-Beam Excellent
E-Beam Crucible Liner Material Fabmate®, Graphite
Temp. (°C) for Given Vap. Press. (Torr) 10-8:  1,592
10-6:  1,822
10-4:  2,117
Comments Films smooth, hard. Careful degas required.

General

Molybdenum is a chemical element with symbol Mo and atomic number 42. Molybdenum does not occur naturally as a free metal on Earth; it is found only in various oxidation states in minerals. The free element, a silvery metal with a gray cast, has the sixth-highest melting point of any element. It readily forms hard, stable carbides in alloys, and for this reason most of world production of the element (about 80%) is used in steel alloys, including high-strength alloys and superalloys. Most molybdenum compounds have low solubility in water, but when molybdenum-bearing minerals contact oxygen and water, the resulting molybdate ion MoO2(4-)  is quite soluble. Industrially, molybdenum compounds (about 14% of world production of the element) are used in high-pressure and high-temperature applications as pigments and catalysts.

Material Notes

AEM Deposition provides Molybdenum pellets, and Molybdenum powder for sale, purity is 99.95%.

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