The metal beryllium
Rare earth element/ the second period of the system of chemical elements D. I. Mendeleev, atomic number 4, is denoted as Be/ It is very light and durable metal. The main sphere of its application — addition alloys for structures operated in particularly difficult conditions. It is hard and quite expensive metal. The melting point 1278 °C, it is toxic in powder form, a poor conductor of heat and electricity. Opened in late eighteenth-century French chemist Louis Vauquelin.
|The proportion||1,848 g/cm3|
|Melting point||1278 °C|
|Boiling point||2970 °C|
|The specific heat of fusion||12, and 21 kJ/mol|
|The degree of oxidation||2, 1|
One of the most popular alloys of beryllium is randol ' — copper-beryllium alloy. It has superior mechanical properties and a high level of chemical resistance. Absolute advantages of beryllium alloys are:
- good machinability;
- corrosion resistance;
- high specific strength;
The main application areas for nuclear power, laser and x-ray equipment, alloying of alloys, mining and aerospace. It is indispensable in the manufacture of heat shields. The alloys at the same time durable and resistant to high temperatures. Oxyliquit on the basis of beryllium is the basis of powerful explosives. Bronze alloy Brb2 (contains 2% Be) possesses high strength, elasticity and corrosion resistance. Copper-beryllium alloys are distinguished by excellent mechanical characteristics and chemical resistance, making them widely used in the industry.
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