BC1687 Hafnium Boride Powder, Hafnium Diboride Powder, HfB2 (CAS No. 12007-23-7)

Catalog No. BC1687
Material HfB2
CAS Number 12007-23-7
Appearance Light Gray Powder / Granule / Lump
Density 10.5 g/cm3

Hafnium boride powder or Hafnium diboride powder(CAS: 12007-23-7) is a unique high-temperature ceramic material with excellent thermal and electrical conductivity. Stanford Advanced Materials (SAM) is a leading manufacturer of hafnium boride across the world, offering high-quality Hafnium diboride.

 

Related products: Hafnium (IV) Chloride PowderHafnium (IV) Iodide PowderScandium(III) Bromine Powder.

Hafnium Boride Powder Description 

Hafnium boride powder is an ultra-high temperature ceramic composed of hafnium and boron. It is an unusual ceramic, having relatively high thermal and electrical conductivities. It is a light gray, metallic-looking material. Hafnium diboride (HfB2) powder has a hexagonal crystal structure, a molar mass of 200.11 grams per mole, and a density of 10.5 grams per cubic centimeter. It has a melting temperature of about 3250 degrees Celsius. The oxidation resistance of hafnium diboride is dependent on the temperature and pressure. At a temperature of 1500°C and 1 atm of pressure, a protective oxide scale of hafnia forms. When temperatures rise above 1600°C and pressures drop below 1 atm, the oxidation resistance of HfB2 is dramatically reduced. Under these conditions, the boiling temperature of B2O3 (one of the oxidation products of HfB2) is exceeded and the protective oxide layer.

Hafnium diboride is generally immediately available in most volumes. Ultra high purity and high purity compositions improve both optical quality and usefulness as scientific standards. Nanoscale elemental powders and suspensions, as alternative high surface area forms, may be considered.

Stanford Advanced Materials (SAM) produces to many standard grades when applicable, including Mil Spec (military grade), ACS, Reagent and Technical Grade, Food, Agricultural and Pharmaceutical Grade, Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards.

Typical and custom packaging is available, as is additional research, technical and safety (MSDS) data. Please contact us for information on lead time and pricing above.

Hafnium Boride Powder Specifications 

Molar Mass (g/mol.)

200.11

Density (g/cm3)

10.5

ChemSpider

21241816

Color

Gray

Melting Point (°C)

ca. 3250 

Materials To Be Avoided 

Oxidizing agents 

EINECS

234-500-7

Van der Waals Radius 

200.pm

Odor

Odorless

Appearance

White

Crystallography

Hexagonal

Solubility in Water

Solubility in Water

Hafnium Boride Powder Typical Applications 

Hafnium boride powder has potential for use in hypervelocity reentry vehicles such as ICBM heat shields or aerodynamic leading-edges, due to its strength and thermal properties. Unlike polymer and composite material, HfB2 can be formed into aerodynamic shapes that will not ablate during reentry. Hafnium diboride is also investigated as a possible new material for nuclear reactor control rods. It is also being investigated as a microchip diffusion barrier. If synthesized correctly, the barrier can be less than 7 nm thick.

Hafnium Boride Powder Packing

25KG per drum or as required by the customer
Our Hafnium Boride Powder is clearly tagged and labeled externally to ensure efficient identification and quality control. Great care is taken to avoid any damage which might be caused during storage or transportation.

Packing

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