Wolframdisilicid Chemische Eigenschaften,Einsatz,Produktion Methoden
S-Sätze Betriebsanweisung:
S22:Staub nicht einatmen.
Beschreibung
Tungsten silicide (WSi2) is an inorganic compound, a silicide of tungsten. It is an electrically conductive ceramic
material. Tungsten silicide can react violently with substances such as strong acids, fluorine, oxidizers, and interhalogens.
It is employed in microelectronics as a contact material, with a resistivity of 60-80 μΩ cm; it forms at 1000℃. It is frequently used as a shunt over polysilicon lines to increase their conductivity and increase signal speed.
Chemische Eigenschaften
Blue-gray, very hard solid. Insoluble in water; attacked by fused
alkalies and mixture of nitric and hydrofluoric acids.
Verwenden
Tungsten silicide is used in microelectronics as a contact material. It is also used as a shunt over polysilicon lines to increase their conductivity and increase signal speed. Further, it acts as a barrier layer between silicon and other metals. In addition to this, it is used in microelectro mechanical systems and for oxidation-resistant coatings. It is also employed as a replacement for earlier tungsten films.
Hazard
Dust flammable.
Wolframdisilicid Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
