Copper silicide (Cu5Si)-Piece

Characteristic

 

Copper silicide (Cu5Si), also called pentacopper silicide, is a binary compound of silicon with copper. It is an intermetallic compound, meaning that it has properties intermediate between an ionic compound and an alloy. This a solid crystalline material is a silvery solid that is insoluble in water. 




Chemical formula:Cu5Si

Molar mass:345.8155 g/mol

Appearance:silver powder

Melting point:825 °C (1,517 °F; 1,098 K)

 


Application

 

Copper silicide thin film is used for passivation of copper-based chips, where it serves to suppress diffusion and electromigration and serves as a diffusion barrier. It is involved in the direct process, the industrial route to organosilicon compounds.