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Xi'an Zhiyue Material Tech. Co., Ltd.
Xi'an Zhiyue Material Tech. Co., Ltd.

Hafnium Diboride Powder (HfB2)

Hafnium boride powder is a compound with unique physical and chemical properties, and its gray black, metallic luster crystal form exhibits its unique charm. This powder has the characteristics of high melting point, high purity, small particle size, and high surface activity, making it widely applicable in the field of high-temperature ceramic materials. As a leading inorganic chemicals supplier, our hafnium boride powder can not only be used to prepare high-density ceramic materials, but also be applied in the fields of electronics and optics, providing strong support for the development of these fields. In addition, due to its excellent chemical stability, hafnium boride powder hardly reacts with all chemical reagents at room temperature, making its storage and transportation more convenient. Therefore, hafnium boride powder is becoming an important material of great concern in materials science research and industrial production due to its excellent performance and wide application fields.


Purity: ≥ 99.99% 

Particle size: D90 ＜ 3um

CAS: 12007-23-7

  • hafnium diboride powder
  • hafnium diboride powder

Product Specifications

  • Product Name: Hafnium Diboride Powder

  • Chemical Formula: HfB₂

  • CAS Number: 12007-23-7

  • Purity: 99.5%, 99.9% (other grades available upon request)

  • Particle Size: 1–5 µm, submicron, nano (<200 nm) available

  • Appearance: Gray-black fine powder

  • Crystal Structure: Hexagonal (AlB₂-type)

  • Melting Point: ~3250 °C

  • Density: ~10.5 g/cm³

  • Packaging: Argon-filled or vacuum-sealed aluminum foil bag



Why Choose Zhiyue’s Hafnium Diboride Powder?

FeatureTechnical Advantage

Extreme Thermal Stability

Ideal for aerospace structures, nozzles, and TPS systems operating above 2000 °C.

Superior Hardness (~23–25 GPa)

Excellent for hard coatings, wear parts, and ballistic protection layers.

Excellent Electrical and Thermal Conductivity

Enables use in conductive ceramics and electrode systems.

Oxidation Resistance in High-Heat Flow

Suitable for high-enthalpy environments such as plasma wind tunnels and reentry shields.



Key Applications of Hafnium Diboride Powder

Hafnium diboride powder is a critical material in ultra-high temperature applications due to its robust combination of mechanical, thermal, and chemical properties:

  • Thermal Protection Systems (TPS)
    Used in nose cones, wing leading edges, and control surfaces of hypersonic and reentry vehicles.

  • UHTC Matrix Reinforcement
    Commonly integrated into SiC and ZrB₂ matrix composites to increase toughness and ablation resistance.

  • Aerospace and Defense Coatings
    Plasma-sprayed or CVD-coated onto components that require erosion resistance and thermal stability under extreme conditions.

  • Field Emission Cathodes and High-Temp Electrodes
    Thanks to its low work function and conductivity, HfB₂ is also used in vacuum electronics and advanced cathode designs.

  • Additive Manufacturing (AM) and Sintering
    Applied in powder-based 3D printing systems for manufacturing high-performance ceramic parts.


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