关键词: 耐碱玻璃;耐热玻璃;特种玻璃管;铷钟

Abstract: Rubidium atomic clock has been the earliest application and the largest number of atomic clock in the global navigation system due to its key time giving.Timing precision and service life of rubidium atomic clock greatly depend on the properties of its bulb materials.In general,rubidium atomic clock is composed of spectral lamp,filter lamp,absorption lamp and so on.Spectral lamp bulb is made by alkali resistant glass tube.However, filter and absorption lamp bulbs are prepared by thermal resistant glass tubes.Progress of special glass tubes for rubidium atomic clock at home and abroad was reviewed. Compared with foreign special glass tubes,domestic relative products have low inner quality,dimensional accuracy, workability and radiation resistance.In addition, the prospect of special glass tubes for rubidium atomic clock was outlined.

Key words: alkali resistant glass;thermal resistant glass;special glass tube;rubidium atomic clock