Diwolframcarbid
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- CAS-Nr.
- 12070-13-2
- Bezeichnung:
- Diwolframcarbid
- Englisch Name:
- TUNGSTEN CARBIDE
- Synonyma:
- Einecs 235-124-6;ditungsten carbide;Tungsten carbide (W2C);Cadmium (Cd) Sputtering Targets;3-Amino-propionic acid benzyl ester;TUNGSTEN CARBIDE, 99.5% (METALS BASIS)
- CBNumber:
- CB2174365
- Summenformel:
- CW2
- Molgewicht:
- 379.69
- MOL-Datei:
- 12070-13-2.mol
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Diwolframcarbid Eigenschaften
- Schmelzpunkt:
- ≈2800°C
- Dichte
- 17.15
- L?slichkeit
- insoluble in H2O
- Aggregatzustand
- Powder
- Wichte
- 17.15
- Farbe
- Black
- Widerstand (resistivity)
- 81.0 (ρ/μΩ.cm)
- Wasserl?slichkeit
- Soluble in nitric acid and hydrofluoric acid. Insoluble in water.
- Crystal Structure
- Hexagonal
- Expositionsgrenzwerte
- ACGIH: TWA 3 mg/m3
NIOSH: TWA 5 mg/m3; STEL 10 mg/m3
- CAS Datenbank
- 12070-13-2
- EPA chemische Informationen
- Tungsten carbide (W2C) (12070-13-2)
Sicherheit
- Risiko- und Sicherheitserkl?rung
- Gefahreninformationscode (GHS)
| RIDADR |
UN3178 |
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| TSCA |
Yes |
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| HazardClass |
4.1 |
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| PackingGroup |
III |
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| Bildanzeige (GHS) |
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| Alarmwort |
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| Gefahrenhinweise |
| Code |
Gefahrenhinweise |
Gefahrenklasse |
Abteilung |
Alarmwort |
Symbol |
P-Code |
| H228 |
Entzündbarer Feststoff. |
Entzündbare Feststoffe |
Kategorie 1 |
Achtung
Warnung |
![GHS hazard pictograms]() src="/GHS02.jpg" width="20" height="20" /> |
P210, P240,P241, P280, P370+P378 |
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| Sicherheit |
| P210 |
Von Hitze, hei?en Oberfl?chen, Funken, offenen Flammen und anderen Zündquellenarten fernhalten. Nicht rauchen. |
| P240 |
Beh?lter und zu befüllende Anlage erden. |
| P241 |
Explosionsgeschützte [elektrische/Lüftungs-/ Beleuchtungs-/...] Ger?te verwenden. |
| P280 |
Schutzhandschuhe/Schutzkleidung/Augenschutz tragen. |
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Diwolframcarbid Chemische Eigenschaften,Einsatz,Produktion Methoden
Chemische Eigenschaften
black hexagonal, a=0.29982 nm, c=0.4722nm; can be prepared by heating tungsten and carbon in the presence of hydrogen at high temperatures; hardness approaches that of diamond; brittle; used in hard metals, and as a 99.5% pure sputtering target to produce wear-resistant films and semiconductor films [KIR83] [CIC73] [CER91] [CRC10]
Physikalische Eigenschaften
Black. Resistant to oxidation
in air up to 700°C. Corrosion
resistant to Mo.
Verwenden
Tungsten Carbide/Carbon (WC/C) is a black-gray colored coating of hard tungsten carbide particles in a soft amorphous carbon matrix. It is used for precision components with abrasive and adhesive wear, seizure problems (poor lubrication) and for dry machining applications.
Definition
Either of two carbides
(W
2C and WC) produced by heating powdered
tungsten with carbon. The carbides
are extremely hard and are used in industry
to make cutting tools or as an abrasive.
WC has a very high melting point
(2770°C) and will conduct electricity. W
2C
also has a very high melting point
(2780°C) but is a less efficient conductor of
electricity. It is very resistant to chemical attack and behaves in a manner very similar
to that of tungsten. It is strongly attacked
by chlorine to give tungsten
hexachloride, WCl
6.
Diwolframcarbid Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
Diwolframcarbid Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.
Global( 36)Lieferanten
12070-13-2(Diwolframcarbid)Verwandte Suche:
- Einecs 235-124-6
- Tungsten carbide (W2C)
- ditungsten carbide
- TUNGSTEN CARBIDE, 99.5% (METALS BASIS)
- 3-Amino-propionic acid benzyl ester
- Cadmium (Cd) Sputtering Targets
- 12070-13-2
- W2C
- CW2
