Boron Nitride Crucible (BN)
Boron Nitride Crucible
Boron Nitride, also known as BN, Hexagonal Boron Nitride (H-BN), and hot-pressed Boron Nitride, is an excellent self-lubricate ceramic that can withstand high temperatures and maintain its lubricating capability in a high vacuum environment. AEM's Boron Nitride crucibles are made from hot-pressed boron nitride blank. Hexagonal Boron Nitride (H-BN) behaves similarly with graphite mechanically but offers excellent electrical resistance.
Boron Nitride Crucible Information
| Compound Formula | BN | |||||
| Purity | >99%, >99.7% | |||||
| Molecular Weight | 24.82 | |||||
| Melting Point | 2973 °C | |||||
| Density | 2.1 g/cm3 (h-BN); 3.45 g/cm3 (c-BN) | |||||
| Solubility in H2O | Insoluble | |||||
| Mohs Hardness | 2 | |||||
| Flexural Strength | 35 Mpa | |||||
|
Coefficient of Thermal Expansion (25℃-1200℃) |
2.0 x 10-6/K | |||||
| Thermal Conductivity at 20℃ | 40 W/mk | |||||
| Maximum Working Temperature | Oxidizing | 900℃ | ||||
| Vacuum | 1900℃ | |||||
| Inert | 2100℃ | |||||
| Refractive Index | 1.8 (h-BN); 2.5 (c-BN) | |||||
| Electrical Resistivity | 13 to 15 10x Ω-m | |||||
| Capacity | 25ml, 55ml, 75ml, 100ml, 1000ml, and customized | |||||
Boron Nitride Crucible Dimensions
| Type | Top Diameter | Height | Thickness | Angle | Volume |
|---|---|---|---|---|---|
| BN-2 | A=0.706" | B=0.465" | C=0.093" | D=15° | 2 ml |
| BN-3 | A=0.805" | B=0.545" | C=0.093" | D=15° | 3 ml |
| BN-4 | A=0.885" | B=0.595" | C=0.093" | D=15° | 4 ml |
| BN-7 | A=1.125" | B=0.520" | C=0.093" | D=15° | 7 ml |
| BN-12 | A=1.35" | B=0.680" | C=0.125" | D=15° | 12 ml |
| BN-15 | A=1.48" | B=0.670" | C=0.125" | D=15° | 15 ml |
| BN-20 | A=1.673" | B=0.768" | C=0.093" | D=15° | 20 ml |
| BN-40 | A=2.030" | B=1.020" | C=0.093" | D=15° | 40 ml |
| AEM offers customized BN crucible shapes and dimensions as per customers' requirements. | |||||
Other shapes Available
Available Materials of Boron Nitride Crucible
| Material | Description | Availability | ||||||
|---|---|---|---|---|---|---|---|---|
| BN99 |
Hot pressed at high temperature (1900C). Excellent corrosion resistance and thermal conductivity. Limited wear resistance Self-bonded and high purity (>99%) |
Machinable blanks Finished parts |
||||||
| BNBO |
General purpose material Bonded by boric oxide |
Finished parts | ||||||
| BNCB |
Calcium borate bonded boron nitride Enhanced moisture resitance |
Finished parts | ||||||
| BN60 | BN 60%, SiO2 40% | Finished parts | ||||||
| BN40 | BN 40%, SiO2 60% | Finished parts | ||||||
| ZSBN | BN-45%, Zr2O3 45% | Finished parts | ||||||
Boron Nitride Crucible Application
Boron Nitride ceramics from AEM can withstand high temperatures in the high vacuum environment, plus it has excellent corrosion resistance and electrical resistance. Thus, Boron Nitride ceramic products are an ideal choice in a wide range of industries, such as:
- Crucibles for crystal growth
- Break rings for horizontal casting machine
- Insulators for high-temperature furnace
- Electric insulators in vacuum system
- Feedthrough for high voltage equipment
- Use for sintering and melting alloy, ceramics, rare earth and other materials.
Related Crucible of Boron Nitride Crucible
Related Products of Boron Nitride Crucible
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Ceramic Sputtering Targets |
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Evaporation Materials Boron Carbide Pellet |
Crucibles Boron Nitride Crucible |
Metal Powders N/A |
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