Tantalcarbid

Bezeichnung:Tantalcarbid

CAS-Nr12070-06-3

Englisch Name:Tantalum carbide

CBNumberCB5325801

SummenformelCTa

Molgewicht192.96

MOL-Datei12070-06-3.mol

Synonyma

Tantalcarbid

Tantalcarbid physikalisch-chemischer Eigenschaften

Schmelzpunkt	3880°C
Siedepunkt	5500°C
Dichte	13.9
Löslichkeit	soluble in HF-HNO3 mixture
Aggregatzustand	Powder
Farbe	Gray to black
Widerstand (resistivity)	30–42.1 (ρ/μΩ.cm)
Wasserlöslichkeit	Soluble in hydrofluoric acid and nitric acid. Partially soluble in water.
Crystal Structure	Cubic, NaCl Structure
EPA chemische Informationen	Tantalum carbide (TaC) (12070-06-3)

Sicherheit

RIDADR	UN3178
WGK Germany	3
TSCA	Yes
HazardClass	4.1
PackingGroup	III

Gefahreninformationscode (GHS)

Tantalum carbide Chemische Eigenschaften,Einsatz,Produktion Methoden

Chemische Eigenschaften
Hard, heavy, refractory, crystalline solid. Hardness 1800 kg/sq mm, resistivity 30 μΩ?cm (room temperature). Extremely resistant to chemical action except at elevated temperature.
Physikalische Eigenschaften
Golden brown crystals, soluble in HF-HNO mixture. Crucible 3 container for melting ZrO and similar oxides with high melting point. Corrosion resistant to molten metals such as Ta and Re. Readily corroded by liquid metals such as Nb, Mo, and Sn. Burning occurs in pure oxygen above 800°C. Severe oxidation in air above 1100–1400°C. Maximum operating temperature of 3760°C in helium
Verwenden
A mixture of tantalum carbide (TaC) and graphite is a very hard material and is used to form the cutting edge of machine tools.
Verwenden
Tantalum monocarbide, TaC, is a gold-colored powder produced industrially by direct reaction of carbon with either tantalum scrap or tantalum pentoxide at temperatures up to 1,900 °C (3,452 °F). It is added in small amounts (0.2–2 wt %) in the form of TaC or mixed carbides like TaNbC and WTiTaC to tungsten carbide–cobalt-based cutting tools in order to reduce grain growth. Adding 2–15 wt % TaC to cemented carbides considerably increases their thermal shock resistance and their resistance to cratering and oxidation. The tantalum–carbon phase diagram shows the existence of several subcarbides.
Verwenden
Cutting tools and dies, cemented carbide tools.
Flammability and Explosibility
Non flammable
Industrielle Verwendung
Tantalum carbide and tungsten carbide combinedin a matrix of nickel, cobalt, and/or chromiumprovide an RHM formulation especiallysuited for a combination of corrosion and wearresistance. Some grades are almost as corrosionresistant as platinum. Nozzles, orifice plates,and valve components are typical uses.

Tantalum carbide Upstream-Materialien And Downstream Produkte

Tantalcarbid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

12070-06-3, Tantalum carbide Verwandte Suche:

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