Guide

As a new material, beryllium has been paid more and more attention, and beryllium is an indispensable and valuable material in atomic energy, rocket, missile, aviation, aerospace and metallurgical industry. Among all metals, beryllium has the strongest ability to transmit X-rays, and is called metallic glass, so beryllium is an irreplaceable material for making small windows of X-ray tubes. Beryllium is the treasure of atomic energy industry. In atomic reactors, beryllium is a neutron source that can provide a large number of neutron shells (hundreds of thousands of neutrons can be generated per second); beryllium has a strong deceleration effect on fast neutrons, which can make the fission reaction continue. Read more

In the periodic table, beryllium is in a diagonal position with aluminum in group IIIA, and their properties are very similar. The standard electrode potentials are similar: they are all active metals. They are all oxygen-loving elements, and the metal surface is easy to form an oxide protective film, which can be passivated by concentrated HNO₃. Both are amphoteric metals. Hydroxides are also amphoteric. Both BeO and Al2O3 oxides have high melting points and high hardness. Both BeCl2 and AlCl3 are electron-deficient covalent compounds that form polymeric molecules through bridging bonds. Beryllium salts and aluminum salts are easy to be hydrolyzed, and the hydrolysis is acidic. Beryllium carbide Be2C, like Read more

Beryllium, like lithium, forms a protective oxide layer in the air, so it is stable even when it is red hot in the air. Insoluble in cold water, slightly soluble in hot water, soluble in dilute hydrochloric acid, dilute sulfuric acid and potassium hydroxide solution to release hydrogen. Metal beryllium has significant corrosion resistance to oxygen-free sodium metal even at higher temperatures. Beryllium is in the +2 valence state and can form polymers as well as a class of covalent compounds with significant thermal stability. Anomalous Properties Of Beryllium The valence electron shell structure of Be atom is 2s2, its atomic radius is 89pm, the Be2+ ionic radius is 31pm, Read more

CB/T 3900-1999 Copper-cobalt-beryllium (CuCo2Be) alloy welding electrodes GB/T 12714-2009 Americium Beryllium Neutron Source GB 24459-2009 Beryllium copper alloy explosion-proof tools GB/T 26056-2010 Vacuum hot pressing beryllium material GB/T 26063-2010 Beryllium Aluminum Alloy GB/T 26313-2010 Beryllium Bronze Seamless Pipe GB 8161-1987 Hygienic standard for beryllium in drinking water sources GBZ 67-2002 Diagnostic criteria for occupational beryllium disease SJ 20900-2004 Specification for beryllium oxide ceramic cylinders for microwave tubes SJ 20867-2003 Specification for beryllium oxide powder materials for electronic ceramics YS/T 221-2011 Metal beryllium beads YS/T 260-2004 Copper beryllium master alloy ingot YS/T 323-2012 Beryllium bronze sheet and strip YS/T 334-2009 Beryllium bronze round bar YS/T 41-2005 Beryllium flakes YS/T 425-2000 Antimony Read more

Beryllium Poison And Industrial Hygiene Beryllium and its compounds are toxic to the human body and are one of the most toxic elements. Industrial hygiene and environmental protection of beryllium operations must meet safety standards. Beryllium Poisoning Recognition Process In 1933, Germany first reported the poisoning of workers exposed to beryllium compounds, and in 1942, it was reported that workers exposed to beryllium silicate and beryllium hydroxide were poisoned by beryllium. The United States first put forward the report of beryllium poisoning in 1943, and implemented the occupational beryllium poisoning patient registration system in 1951. By the end of 1977, 887 cases had been registered. Western countries have also reported Read more