Breif introduction of Barium metal granules :
Product name:Barium metal granules
Cas:7440-39-3
Purity:99.9%
Formula:Ba
Size:-20mm, 20-50mm (under mineral oil)
Melting point:725 °C(lit.)
Boiling point:1640 °C(lit.)
Density :3.6 g/mL at 25 °C(lit.)
Storage temp. water-free area
Form :rod pieces, chunks, granules
Specific Gravity:3.51
Color :Silver-gray
Resistivity:50.0 μΩ-cm, 20°C
Barium is a chemical element with symbol Ba and atomic number 56. It is the fifth element in Group 2, a soft silvery metallic alkaline earth metal. Because of its high chemical reactivity, barium is never found in nature as a free element. Its hydroxide, known in pre-modern history as baryta, does not occur as a mineral, but can be prepared by heating barium carbonate.
Applications: Metal and alloys, bearing alloys; lead–tin soldering alloys – to increase the creep resistance; alloy with nickel for spark plugs; additive to steel and cast iron as an inoculant; alloys with calcium, manganese, silicon, and aluminum as high-grade steel deoxidizers.Barium has only a few industrial applications. The metal has been historically used to scavenge air in vacuum tubes. It is a component of YBCO (high-temperature superconductors) and electro ceramics, and is added to steel and cast iron to reduce the size of carbon grains within the microstructure of the metal.
Barium, as a metal or when alloyed with aluminum, is used to remove unwanted gases (guttering) from vacuum tubes, such as TV picture tubes. Barium is suitable for this purpose because of its low vapor pressure and reactivity towards oxygen, nitrogen, carbon dioxide, and water; it can even partly remove noble gases by dissolving them in the crystal lattice. This application is gradually disappearing due to the rising popularity of the tubeless LCD and plasma sets.
COA of Barium metal granules
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