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Once the metal is ignited in air by heating above the oxide melting point around 2500 °C, beryllium burns brilliantly, [15] forming a mixture of beryllium oxide and beryllium nitride. Beryllium dissolves readily in non- oxidizing acids , such as HCl and diluted H 2 SO 4 , but not in nitric acid or water as this forms the oxide.
Beryllium copper (BeCu), also known as copper beryllium (CuBe), beryllium bronze, and spring copper, is a copper alloy with 0.5–3% beryllium. [1] Copper beryllium alloys are often used because of their high strength and good conductivity of both heat and electricity. [2] It is used for its ductility, weldability in metalworking, and machining ...
Beryllium oxide (BeO), also known as beryllia, is an inorganic compound with the formula BeO. This colourless solid is an electrical insulator with a higher thermal conductivity than any other non-metal except diamond, and exceeds that of most metals. [12] As an amorphous solid, beryllium oxide is white.
Beryllium is used mainly in military applications, [66] but non-military uses exist. In electronics, beryllium is used as a p-type dopant in some semiconductors, [ 67 ] and beryllium oxide is used as a high-strength electrical insulator and heat conductor . [ 68 ]
Beryllide is an intermetallic compound of beryllium with other metals, e.g. zirconium, tantalum, titanium, nickel, or cobalt. Typical chemical formulae are Be 12 Ti and FeBe 5. These are hard, metal-like materials that display properties distinct from the constituents, especially with regards to their resilience toward oxidation.
Beryllium is a chemical element; it has symbol Be and atomic number 4. It is a steel-gray, hard, strong, lightweight and brittle alkaline earth metal. It is a divalent element that occurs naturally only in combination with other elements to form minerals. Gemstones high in beryllium include beryl (aquamarine, emerald, red beryl) and chrysoberyl.
Beryllium-aluminum alloy an alloy that consists of 62% beryllium and 38% aluminum, by weight, corresponding approximately to an empirical formula of Be 2 Al. It was first developed in the 1960s by the Lockheed Missiles and Space Company, who called it Lockalloy, [1] [2] and used as a structural metal in the aerospace industry because of its high specific strength [3] and stiffness. [4]
A different chemistry-based approach advocates replacing the term "heavy metal" with two groups of metals and a gray area. Class A metal ions prefer oxygen donors; class B ions prefer nitrogen or sulfur donors; and borderline or ambivalent ions show either class A or B characteristics, depending on the circumstances. [32]