SiB6 Silicon Hexaboride Powder CAS 12008-29-6

Silicon Hexaboride (SiB₆) is an ultra-high-performance ceramic material renowned for its exceptional hardness, thermal stability (melting point >2200°C), and semiconductor properties. This dark gray to black crystalline compound combines silicon’s thermal conductivity with boron’s extreme hardness, making it ideal for aerospace, nuclear, and advanced electronic applications under extreme conditions.

Ultra-High Hardness: Surpasses many borides (e.g., TiB₂) in abrasive environments.
Thermal Shock Resistance: Stable under rapid thermal cycling (e.g., 25°C to 1800°C).
Oxidation Resistance: Forms protective SiO₂/B₂O₃ layers above 1200°C in air.
Lightweight Design: Low density enhances weight-sensitive applications.

product details

Properties

- - Chemical Formula: SiB₆
    
    Molecular Weight: 92.95 g/mol
    
    Density: 2.43 g/cm³
    
    Composition: B:69.78%, Si:30.22%
    
    Crystal Structure: Cubic (space group F3m)
    
    Melting Point: ~2200°C
    
    Vickers Hardness: ~28–32 GPa
    
    Electrical Conductivity: Semiconductor (bandgap ~1.5 eV)
    
    Purity: 99% (industrial grade), 99.9% (high-purity grade)

Products Usage

1. High-Temperature Structural Components: Nozzles, furnace linings, and hypersonic vehicle thermal protection systems.

2. Wear-Resistant Coatings: Plasma-sprayed layers for cutting tools, extrusion dies, and mining equipment.

3. Nuclear Technology: Neutron absorption coatings in reactor shielding systems.

4. Electronics: High-temperature semiconductors and thermoelectric materials.

5. Additive Manufacturing: Reinforcement phase in SiC or Si₃N₄ composites for 3D-printed aerospace parts.

Packing:

Our normal packaging is 25kgs/Drum

The packaging can be customized. the shipping term can be by sea, by air, and sample or small quantity can be shipped by DHL, FEDEX, EMS and TNT.

Remark: Chemical composition and size can be optimized by the customers' requirements 固体通用s27

Conditions for safe storage, including any incompatibilities

Separated from ammonia, strong hydrogen peroxide solutions and strong acids.

Safety Protection

Precautions for safe handling

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.