Hexagonal Boron Nitride ceramic (short for BN) plays an important role in metals refining due to its non wet to molten metal and high electrical insulation, at the same time it can endure the high temperature and corrosion environment. BN can effectively solve the problems of easy adhesion and corrosion that traditional materials face when touch with molten metals.
In metal refining industry, BN is used as key components to transport liquid molten metal, thermal protecting tube, and insulating parts in furnace.
key components to transport liquid molten metal
To ensure the smooth metal flow in metal refining industry, the transfer tube’s material must be not wet at the same time not reaction with the molten metal such as aluminium, copper, steel, titanium and zirconium. BN’s non-wetting and extreme corrosion resistance makes it an ideal choice.
Thermal protecting tube and insulating parts in furnace
At vacuum environment and with inactive gas, BN can be used at temperatures of approximately 1,750-2,100°C, depending on composition. It is with low thermal expansion and outstanding electrical insulation. So it can be directly used in high temperature furnaces as thermal protecting tube and insulating parts.
BN Material Properties
| Properties | Units | UHB | HB | BMS | BMA | BSC | BMZ | BAN |
|---|---|---|---|---|---|---|---|---|
| Main composition | BN>99.7% | BN>99% | BN+AL+Si | BN+ZR+AL | BN+SIC | BN+ZRO2 | BN+ALN | |
| Density | g/cm3 | 1.6 | 2 | 2.2-2.3 | 2.25-2.35 | 2.4-2.5 | 2.8-2.9 | 2.8-2.9 |
| Three-point Bending Strength | MPa | 18 | 35 | 65 | 65 | 80 | 90 | 90 |
| Compressive Strength | MPa | 45 | 85 | 145 | 145 | 175 | 220 | 220 |
| Thermal Conductivity | W/m.K | 35 | 40 | 35 | 35 | 45 | 30 | 85 |
| Max Using Temperature In Atmosphere | (°C) | 900 | 900 | 900 | 900 | 900 | 900 | 900 |
| Max Using Temperature In Inactive Gas | (°C) | 2100 | 2100 | 1750 | 1750 | 1800 | 1800 | 1750 |
| Max Using Temperature In High Vacuum | (°C) | 1800 | 1800 | 1750 | 1750 | 1800 | 1800 | 1750 |
| Room Temperature Electric Resistivity | Ω·cm | >10^14 | >10^14 | >10^13 | >10^13 | 10^12 | 10^12 | 10^13 |
BN material available in Innovacera
Material Application:
*Metal Refining and metallurgy
*Vacuum components
*Semiconductor
* Electronics
*New energy industry
Besides Boron Nitride Ceramic, we also have lots of other ceramic component like Aluminum nitride, PBN , Zirconia, Alumina, Silicon Carbide and Silicon Nitride. Any need or question of technical ceramics, just feel free to contact us at +86 592 558 9730 or sales@innovacera.com for more information.
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