High Purity and Density：Purity up to 99.999% or higher, dense and non-porous surface, excellent airtightness, and helium permeability as low as 1×10⁻¹⁰ cm³/s.
High-Temperature Resistance and Thermal Performance： Withstands high temperatures up to 2200℃, and its strength increases with rising temperature. It has excellent thermal shock resistance and anisotropic thermal conductivity (60 W/(m·K) in the a-direction at 200℃, and only 2.60 W/(m·K) in the c-direction).
Chemical Inertness： Resistant to corrosion by acids, alkalis, salts and organic reagents; non-wetting and non-reactive with most molten metals and semiconductor materials.
| Performance | Performance | Unit | Value |
| Density | Density | g/cm³ | 1.95-2.20 |
| Tensile Strength | Tensile Strength | N/mm² | 102 |
| Flexural Strength | Flexural Strength | N/mm² | 243 |
| Compressive Strength | Compressive Strength | N/mm² | 244 |
| Thermal Conductivity | (at 200℃) | W/(m·K) | 60 (a-direction); 2.60 (c-direction) |
| Coefficient of Thermal Expansion | (at 200℃) | T.α/(1/K) | 2.0×10⁻⁶ (a-direction) |
| Dielectric Constant (Room Temperature) | Dielectric Constant (Room Temperature) | / | 5.81 |
| Resistivity | Resistivity | Ω·cm | 2.4×10¹⁵ |
Semiconductor Single Crystal Growth： Used for growing III-V compound single crystals (such as GaAs (gallium arsenide) and InP (indium phosphide)) via VGF (Vertical Gradient Freeze) and LEC (Liquid Encapsulated Czochralski) methods. The high purity and high-temperature deformation resistance of PBN crucibles ensure low defects and high purity of crystals.
Molecular Beam Epitaxy (MBE)： Serves as MBE crucibles for evaporating materials like Al (aluminum) and Ga (gallium) to prepare high-end epitaxial wafers such as superlattices and quantum wells. Its high purity and non-wettability ensure accurate stoichiometry and high quality of thin-film materials.
OLED Evaporation and Microelectronics： Applied in OLED evaporation source units, featuring high-temperature resistance and extremely low outgassing rate, enabling uniform evaporation, prolonging equipment service life and improving the performance of display devices.
High-Temperature Metal Processing and Metallurgy： Used for molten metal transfer and special metallurgy crucibles. Its thermal shock resistance and corrosion resistance make it suitable for processing active metals and alloys.
No. 88, Nanhuan East Road, Yucheng City, Shandong Province
