3" SAPPHIRE SHEET

Asapphire is bassicaly the crystal single form pure aluminium oxdide  with a series of properties such as high hardness,strength,good thermal conductivity,high-temperauture resistance,excellent optical transmission,electrical resistance,and chemical stability.Because of these,this material is broadly used as an important technical crystal in the weapon manufacturing,industrial producing and fields of advanced precision technology.In the concrete,the hardness,strength,erosion resistance and broad transmission band from ultroviolet  through infrared make it a logical selection for application such as protective shields,infrared and ultroviolet transmission windows,solor cell for aerospace instruments and similar devices.Additionally,the sapphire is the most effective single crystal substrate available sovling many microcircuit design and producing problems because of it's high dielectric constant,controlled orientation,superior surface finish and excellent physical electrical and thermal characteristics.

Tianjin Silicate Research Institute,by long-time effort,has succesfully grow 3" sapphire sheet.From now on,sapphire has more and more usage.