Material Introduction
Boron Nitride
Material Introduction
A high-temperature structural material, hexagonal boron nitride is widely used to make nozzles for the amorphous industry. It is a key component in quenching and rapid solidification devices. Our boron nitride material is compounded by adding materials to improve the high temperature erosion resistance and thermal shock resistance of the product, based on a boron nitride matrix. This offers good high temperature resistance, corrosion resistance, high temperature chemical stability and thermal shock resistance; it is also very easy to process. As a result, it is widely used in the amorphous spray tape industry.
| Chemical symbol | BN |
| Density/g·cm-3 | 2.25 |
| Melting point/°C | No obvious melting point |
| Mohs hardness | 2 |
| Bending strength(20°C) /Mpa | Horizontal direction 60~80，vertical direction 30~50 |
| Elastic modulus(20°C) /Gpa | 910 |
Specifications and Performance
| Boron nitride nozzle | ||
| Main components | BN+ZrO2>+excipients | |
| Size/mm | 220×185×32 | 254×156×32 |
| Density/g·cm-3 | 2.2~2.5 | |
| Leeb hardness/HL | 450~600 | |
| Bending strength/ Mpa | 120 | |
| Thermal expansion coefficient (25°C-1200°C) /×10-6·K-1 | 3.9 | |
Fabrication Process
Wet mixing combined with a hot pressing sintering method is used to prepare boron nitride materials, with the entire process from mixing the powder to the final hot pressing carried out in strict accordance with product operating instructions to ensure that the boron nitride nozzles meet customer requirements.
Advantage
Boron nitride nozzles have good thermal shock resistance and toughness in high temperature environments of 1400°C, thus improving deformation resistance. The high density ensures that the nozzle has good erosion resistance and corrosion resistance to high-temperature metal solutions, effectively reducing the phenomenon of nozzle blocking and prolonging the service life of the nozzle while ensuring the uniformity of the spray belt.
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