Hexagonal Boron Nitride Ceramic
Boron nitride ceramic products are made of hexagonal boron nitride powder by high temperature vacuum hot pressing sintering.
Description
Boron nitride crystals belong to the hexagonal crystal system, the structure is similar to graphite, there are many similarities in performance, so it is also called "white graphite".
It has good heat resistance, thermal stability, thermal conductivity, high-temperature dielectric strength, is the ideal heat dissipation materials and high-temperature insulation materials. Boron nitride has good chemical stability, and can resist most of the molten metal corrosion. It also has good self-lubrication.
Our boron nitride ceramics:
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Adopt international advanced process high temperature boron nitride raw material to ensure material purity and high temperature resistance.
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Cold isostatic pressing molding and bidirectional pressure hot pressing sintering process, high material density, long service life.
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Stable and mature production technology and process, without adding any binder, to ensure the stability of materials.


Product performance:
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Good thermal performance, high heat resistance temperature, and good thermal stability
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Good electrical insulation, breakdown resistance, low loss of high-frequency medium
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Good machinability and machining accuracy up to 0.01mm
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Good chemical stability, no reaction with metal melt and acid
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Infrared penetration, microwave penetration, neutron absorption
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Non-toxic
Product parameters:
| Category/Index | Grade | Boron Nitride Ceramic | |
| Physical properties | Density | g/cm3 | 2.0-2.2 |
| Exterior | White/Yellowish | ||
| Bending strength(Mpa) | Mpa | 35 | |
| Moh's hardness | 2 | ||
| Hardness | HL | 300 | |
| Thermal performance | Thermal conductivity at 20℃(w/m·k) | w/m·k | 50 |
| Thermal expansion coefficient(25℃-1200℃) | 10-6/K | 2*10-6 | |
| MAX-Temperature of use |
Oxidizing 900℃ Inert 2200℃ Vacuum 1600℃ |
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| Electrical performance | Volume resistivity25℃ | Ω·cm | >1014 |
| Dielectric constant 108Hz | 4.5 | ||
| Dielectric strength | KV/mm | 60 | |
| KV | 2-3 | ||
| Chemical composition | B+N | 99% | |
| Oxygen content | % | <0.5% | |
| % | <0.05% | ||
| Adhesive | No | ||
The packing way:

The professional services:
Our company can process customized boron nitride ceramics according to customers' drawings and tolerance requirements.

































