TUNGSTEN SILICIDE
TUNGSTEN SILICIDE Basic information
- Product Name:
- TUNGSTEN SILICIDE
- Synonyms:
-
- TUNGSTEN SILICIDE
- TUNGSTEN DISILICIDE
- TUNGSTEN SILICIDE, -325 MESH
- TUNGSTEN SILICIDE (99.7%-W)
- TUNGSTEN SILICIDE, 99.995% (METALS BASIS EXCLUDING MO), MO <
- Tungsten silicide, 99.995% (metals basis excluding Mo), Mo <20ppm
- Tungsten silicide, 99.5% (metals basis)
- TUNGSTEN SILICIDE, 99%TUNGSTEN SILICIDE, 99%TUNGSTEN SILICIDE, 99%
- CAS:
- 12039-88-2
- MF:
- Si2W
- MW:
- 240.01
- EINECS:
- 234-909-0
- Product Categories:
-
- Ceramics
- Metal and Ceramic Science
- Silicides
- Mol File:
- 12039-88-2.mol
TUNGSTEN SILICIDE Chemical Properties
- Melting point:
- 2165°C
- Density
- 9,88 g/cm3
- solubility
- insoluble in H2O
- form
- Powder
- Specific Gravity
- 9.88
- color
- blue-gray tetragonal crystals, crystalline
- Resistivity
- 33.4 (ρ/μΩ.cm)
- Water Solubility
- Insoluble in water.
- Hydrolytic Sensitivity
- 2: reacts with aqueous acid
- Crystal Structure
- Tetragonal
- Exposure limits
- ACGIH: TWA 3 mg/m3
NIOSH: TWA 5 mg/m3; STEL 10 mg/m3 - CAS DataBase Reference
- 12039-88-2
- EPA Substance Registry System
- Tungsten silicide (WSi2) (12039-88-2)
Safety Information
- Safety Statements
- 22
- WGK Germany
- 3
- TSCA
- Yes
MSDS
- Language:English Provider:SigmaAldrich
- Language:English Provider:ALFA
TUNGSTEN SILICIDE Usage And Synthesis
Description
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.
Chemical Properties
Blue-gray, very hard solid. Insoluble in water; attacked by fused alkalies and mixture of nitric and hydrofluoric acids.
Uses
Oxidation-resistant coatings, electrical resistance and refractory applications.
Uses
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.
TUNGSTEN SILICIDESupplier
- Tel
- 021-61259108 18621169109
- market03@meryer.com
- Tel
- 821-50328103-801 18930552037
- 3bsc@sina.com
- Tel
- 400-6106006
- saleschina@alfa-asia.com
- Tel
- 010-89508211 18501085097
- sales.bj@hwrkchemical.com
- Tel
- 0757-86329057 18934348241
- sales4.gd@hwrkchemical.com
TUNGSTEN SILICIDE(12039-88-2)Related Product Information
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- HAFNIUM CARBIDE
- HAFNIUM SILICIDE
- NICKEL SILICIDE
- IRON SILICIDE
- Molybdenum silicide
- VANADIUM SILICIDE
- NIOBIUM SILICIDE
- CHROMIUM SILICIDE
- Zirconium silicide
- CALCIUM SILICIDE
- MANGANESE SILICIDE
- MAGNESIUM SILICIDE
- Boron carbide
- TUNGSTEN(V) ETHOXIDE
- MOLYBDENUM(V) CHLORIDE
- Hydrazine sulfate
- TUNGSTEN(VI) CHLORIDE