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Calcium Evaporation Material (Ca)

Calcium Evaporation Material (Ca)
Material Type Calcium
Symbol Ca
Atomic Weight 40.078
Atomic Number 20
Color/Appearance Silvery White, Metallic
Thermal Conductivity 200 W/m.K
Melting Point (°C) 839
Coefficient of Thermal Expansion 22.3 x 10-6/K
Theoretical Density (g/cc) 1.54
Z Ratio 2.62
E-Beam Poor
Thermal Evaporation Techniques Boat:  W
Coil:  W
Basket:  W
Crucible:  Al2O3, Q
Temp. (°C) for Given Vap. Press. (Torr) 10-8:  272
10-6:  357
10-4:  459
UN Number 1401
Comments Corrodes in air.

General

Calcium is a chemical element with symbol Ca and atomic number 20. An alkaline earth metal, calcium is a reactive pale yellow metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. It is the fifth most abundant element in Earth's crust and the third most abundant metal, after iron and aluminium. The most common calcium compound on Earth is calcium carbonate, found in limestone and the fossilised remnants of early sea life; gypsum, anhydrite, fluorite, and apatite are also sources of calcium.

Material Notes

AEM Deposition provides Calcium pieces, and Calcium powder for sale, purity is 99.5%.

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