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manufacture Hafnium carbide boride dioxide powder

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Min. Order / Reference FOB Price
1 Kilogram	US $10000.00/ Kilogram

Local Area:	Changsha, Hunan, China
R&D Capacity:	OEM, ODM, Other
Payment Terms:	LC, T/T, D/P, Paypal, Western Union

Brand:	China-WHASIN
Place of Origin:	Hunan, China
Brand Name:	China-WHASIN
Model Number:	HfC,CH4Hf

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manufacture Hafnium powder,Hafnium carbide/Hafnium boride/Hafnium dioxide powder

Product Description

Describe:

Hafnium carbide (HfC) is a chemical compound of hafnium and carbon. With a melting point of about 3900 °C it is one of the most refractory binary compounds known. However, it has a low oxidation resistance, with the oxidation starting at temperatures as low as 430 °C.

Hafnium carbide is usually carbon deficient and therefore its composition is often expressed as HfCx (x = 0.5 to 1.0). It has a cubic (rock-salt) crystal structure at any value of x.

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) and melting point.

Features :

Mol	190.5
Carbon content	6.30%
Density	12.7 g/cm3
Melting point	3890ºC
Characteristic	High melting point and high elasticity, good electric conductivity, small thermal expansion and good impact resistance.
Use/Application	used as materials for :
	1. hard alloy field
	2. aerospace field (Very suitable for rocket nozzle, for re-entry space rocket nose cone)
	3. atomic energy field
	4. electronic field
	5. coating and hard thin field
	6. metallurgy field
	7. ceramic field

Product quality indicators :

Chemical Composition(%)
Total carton	Free carton	Impurities(max,%)
Total carton	Free carton	Nb	Fe	Si	O	N	Na	K	Ca
≥6.15	≤0.30	0.005	0.05	0.005	0.50	0.05	0.005	0.005	0.05
Particle size: 0.5-500micron,5-400mesh Particle size and chemical composition are modified on request.