Hafnium Carbide Powder HfC cas 12069-85-1

(Hafnium Carbide Powder HfC cas 12069-85-1)

Specification：

Product Name: Hafnium Carbide Powder

CAS Number: 12069-85-1

Features:

Ultrafine hafnium carbide powder by variable current laser ion beam, chemical vapor deposition powder high activity, surface energy is large, widely used in powder metallurgy, hafnium carbide (HfC) = 185.501, 6.47% carbon, belongs to the crystallization of sodium chloride type cubic crystal system, theoretical density of 12.7 g/cm3, melting point 3890 ℃, the highest melting point is a single compound.Volume resistivity Ω 1.95 x 10-4 cm (2900 ℃), thermal expansion coefficient of 6.73 x 10-6 / ℃.Has high elasticity coefficient, good electrical and thermal conductivity, small thermal expansion coefficient and good resistance to impact performance, superfine hafnium carbide with many compounds (such as ZrC, TaC) form a solid solution.

Properties:

Appearance: Black Odorless Powder

Molecular Formula: HfC

Molar mass: 190.50 g/mol

Molecular Weight: 103.2347

Melting Point: 3,900 °C (7,050 °F; 4,170 K)

Density: 12.2 g/cm3

HfC

C

Free C

O

N

Fe

Ca

Ti

W

Na

Si

6.2

0.35

0.65

0.01

0.03

0.01

0.01

0.01

0.02

0.005

Applications:

Hafnium carbide powder is obtained by the reduction of hafnium(IV) oxide with carbon at 1800 to 2000 °C. A long processing time is required to remove all oxygen. Alternatively, high-purity HfC coatings can be obtained by chemical vapor deposition from a gas mixture of methane, hydrogen, and vaporized hafnium(IV) chloride. Because of the technical complexity and high cost of the synthesis, HfC has a very limited use, despite its favorable properties such as high hardness (>9 Mohs[5]) and melting point.

(Hafnium Carbide Powder HfC cas 12069-85-1)