- TUNGSTEN SILICIDE
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- $1.00 / 1KG
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2019-07-10
- CAS:12039-88-2
- Min. Order: 1KG
- Purity: 99%
- Supply Ability: 100kg
Related articles - Tungsten Silicide Crystal Structure
- Tungsten Silicide (WSi2) crystallizes in the tetragonal space group I4/mmm (no. 139). Furthermore, the equilibrium WSi2 tetrag....
- Mar 25，2024
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| | 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 Statements | 22 | | WGK Germany | 3 | | TSCA | Yes |
| | 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 SILICIDE Preparation Products And Raw materials |
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