Boron Nitride (BN) Ceramics
Boron nitride (BN) is a non-toxic thermal and chemical refractory compound with high electrical resistance and is most commonly available in colorless crystal or white powder form. It is an advanced synthetic ceramic material and is often referred to as "white graphene" or "inorganic graphite", because it has a similar hexagonal platy crystal structure to graphite, but has a much higher oxidation resistance at 800 ℃.
Read more: Boron Nitride Overview: Properties, Production, and Uses
Boron Nitride Properties:
Hexagonal boron nitride (hBN) is a stable phase at ordinary temperature and pressure, and cubic boron nitride (CBN) and wurtzite boron nitride (WBN) can be synthesized at high temperature and high pressure.
The hexagonal form boron nitride (HBN) corresponding to graphite is the softest and most stable form among BN polymorphs and is therefore used as a lubricant and an additive to cosmetic products. HBN can also be produced in graphene-like sheets that can be formed into boron nitride nanotubes.
The cubic boron nitride (CBN) has a high hardness which is inferior only to diamond. But unlike diamond, CBN is insoluble in metals at high temperatures, making it a useful abrasive and oxidation-resistant metal coating.
The rare wurtzite boron nitride (WBN) modification is similar to lonsdaleite, and it may even be harder than CBN.
ACM's production formulations are developed to address the varied application problems in which ceramic components are commonly used. Many industrial applications push the envelope on specific requirements leading to the development of new formulations to successfully address them.
CAS#: 10043-11-5 | |||
Powder, F.W. 24.82 | |||
Item No. | Description | Purity | Lot Size |
NI05-98 | Boron Nitride Powder Particle Size: 3 µm, 200 mesh or 325mesh |
BN > 98 %, B2O3 < 0.6%, Ca < 0.015%, Si < 0.12% |
100 kg 1000kg Customize |
NI05-99 | Boron Nitride Powder Particle Size: 3 µm, 200 mesh or 325mesh |
BN > 99 %, B2O3 < 0.4%, Ca < 0.01%, Si < 0.10% |
100 kg 1000kg Customize |
Grade | BN99 (Grade AX05) |
BN-BO (Grade A) |
BNCB (Grade HP) |
BNSIO (M&M26) |
BN-AlN | ZSBN |
Composition | hBN > 99.5% | hBN > 98% | hBN > 90% Calcium Borate |
hBN 40%, SiO2 60% (M) hBN 60%, SiO2 40% (M26) |
BN+AlN AlBO3 |
hBN > 45% ZrO2 < 45% Borosilicate < 10% |
Color | white | white | white | white | white | gray |
Density (g/cm3) |
1.9 | 2.1 | 2 | 2.1-2.3 | 2.5-2.6 | 2.9 |
Features | • Excellent corrosion resistance • High thermal conductivity • Thermal shock resistance |
• Excellent moisture resistance • Low thermal expansion • Spallation resistance |
• Thermal shock resistance • High thermal conductivity • Moisture resistance |
• High thermal conductivity • High-temperature resistance • Easy machining |
• Good wear resistance • Chemical stability • High thermal shock stability |
|
Shape | Rod Plate/Sheet Tube Crucible Custom part |
Rod Custom part |
Custom part | Custom part | Custom part | Nozzle Custom part |
*For more information, please contact us.
Boron nitride powder has high thermal conductivity, low coefficient of friction, high dielectric constant, and is chemically inert. Due to those unique properties, it is used in a broad range of applications as follows:
Boron nitride ceramics are traditionally used as parts of high-temperature equipment because of excellent thermal and chemical stability.
BN also has potential use in nanotechnology. Boron nitride nanotubes can be produced that have a structure similar to that of carbon nanotubes, i.e. graphene (or BN) sheets rolled on themselves, but the properties are very different.
H-BN Ceramic is usually used to make BN crucible. C-BN is used as an abrasive and is an ideal material for heat spreaders. W-BN is an ideal dielectric substrate material for optical, electronic, and 2-D graphene-based devices.
Advanced Ceramic Materials (ACM) is a leading supplier of boron nitride ceramic products of the highest quality for a wide range of applications. We are happy to provide advice on materials, design, and application. Feel free to contact us with any questions about boron nitride or other ceramic materials that are not listed on the website.