Wolframdiselenid
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- CAS-Nr.
- 12067-46-8
- Bezeichnung:
- Wolframdiselenid
- Englisch Name:
- TUNGSTEN SELENIDE
- Synonyma:
- WSe2 Crystal;TUNGSTEN SELENIDE;TUNGSTEN DISELENIDE;Tungsten(Ⅳ) selenide;TUNGSTEN (IV) SELENIDE;Tungsten Selenium (IV);bis(selanylidene)tungsten;CVD Method Monolayer WSe2;Tungsten(IV) selenide lump;IV) 99.9%TUNGSTEN SELENIDE
- CBNumber:
- CB5120338
- Summenformel:
- Se2W
- Molgewicht:
- 341.78
- MOL-Datei:
- 12067-46-8.mol
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Wolframdiselenid Eigenschaften
- Dichte
- 9.32
- RTECS-Nr.
- YO7714000
- Aggregatzustand
- Powder, 10μm
- Farbe
- gray hexagonal, hexane crystals, crystalline
- Wasserl?slichkeit
- Insoluble in water.
- Expositionsgrenzwerte
- ACGIH: TWA 0.2 mg/m3; TWA 3 mg/m3
NIOSH: IDLH 1 mg/m3; TWA 5 mg/m3; TWA 0.2 mg/m3; STEL 10 mg/m3
- CAS Datenbank
- 12067-46-8(CAS DataBase Reference)
- EPA chemische Informationen
- Tungsten selenide (WSe2) (12067-46-8)
Wolframdiselenid Chemische Eigenschaften,Einsatz,Produktion Methoden
Chemische Eigenschaften
-325 mesh black powder(s); dry, solid lubricant with exceptional stability at high temperatures, and in high vacuum; used in the form of 99.8% pure material as a sputtering target to produce lubricant films [HAW93] [CER91] [AES93]
Verwenden
Tungsten(IV) selenide is used as an important compound in electrochemical solar cells. It acts as a stable semiconductor.
Definition
Lamellarstructured,
dry, solid lubricant with exceptionally
high temperature and high vacuum stability.
Retains its lubricity to temperatures as low as
?265C.
Hazard
TLV: 5 mg(W)/m3.
Structure and conformation
Tungsten diselenide, WSe2, has a hexagonal crystalline structure comparable to MoS2. Every tungsten atom is covalently bonded to six selenium ligands in a trigonal prismatic coordination sphere, and each selenium is bonded to three
tungsten atoms in a pyramidal geometry. Heating thin films of tungsten under pressure from gaseous selenium and high
temperatures ( . 527℃/800K) using the sputter deposition technique leads to the films crystallizing in hexagonal structures with the correct stoichiometric ratio.
W+ 2Se→WSe2
Wolframdiselenid Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
Wolframdiselenid Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.
Global( 122)Lieferanten
12067-46-8(Wolframdiselenid)Verwandte Suche:
- TUNGSTEN DISELENIDE
- TUNGSTEN (IV) SELENIDE
- TUNGSTEN SELENIDE
- TUNGSTEN (IV) SELENIDE, 99.8% (METALS BASIS)
- Tungsten(Ⅳ) selenide
- Tungsten(IV) selenide (WSe2)
- Tungsten diselenide Crystal, 99.995%
- IV) 99.9%TUNGSTEN SELENIDE
- Tungsten(IV) selenide lump
- Tungsten(IV) selenide, 99.99%, trace metals basis
- TUNGSTEN SELENIDE ISO 9001：2015 REACH
- WSe2 Crystal
- bis(selanylidene)tungsten
- Tungsten Selenium (IV)
- Mechanically Exfoliated Monolayer WSe2 On Substrates
- CVD Method Monolayer WSe2
- 12067-46-8
- WSe2
- Se2W
