铍是一种轻质稀有金属,其比重仅有1.85克/厘米~3,在地壳中含量约为百万分之五左右。早先铍主要用来制造铍铜合金,氧化铍陶瓷等。1916年美国首次开始了金属铍材的工业生产,由于当时应用很少,使其发展受到限制。自从本世纪四十年代铍在原子能反应堆中得到应用以后,才引起了很多学者对研究铍发生兴趣,进一步揭示了铍的许多优良的特性,促进了铍的应用日趋广泛。 Beryllium is a light rare metal with a specific gravity of only 1.85 g / cm3 and a crust content of about 5 parts per million. Beryllium was mainly used to make beryllium copper alloy, beryllium oxide ceramics. In 1916, the United States started its industrial production of beryllium metal for the first time. Due to the limited application at that time, its development was limited. Since beryllium was applied to nuclear reactors in the 1940s, many scholars have been interested in the study of beryllium, further revealing many excellent properties of beryllium and promoting the widespread use of beryllium.