Machinable ceramic : Boron Nitride
Overview: Boron Nitrid Ceramic
Boron nitride is an advanced synthetic ceramic material available as a powder, solid, liquid or aerosol. It has exceptional temperature resistance, dielectric strength, and thermal conductivity. Thanks to these various properties, boron nitride is an easily machinable material. Boron nitride is comparable to graphite, in terms of its lubricating properties and good thermal conductivity, but is a white material, with very good electrical insulating properties.
To obtain sintered boron nitride, the boron nitride powder is pressed at a very high temperature. The following two methods used are:
- uniaxial hot pressing (HP)
- hot isostatic pressing (HIP)
In its solid form, boron nitride can easily be machined in virtually any form. Boron nitride is resistant to temperatures above 2,000 °C in inert and reducing atmospheres. Plus, it is not wetted by most molten metals and slags and can therefore be used as a container for most molten metals, including aluminium, sodium, iron, steel, silicon, boron and copper.
Applications of Machinable Boron Nitrid
- Protection and sheathing for thermocouples and measuring probes
- Protection for casting tools
- Electrical insulation at very high temperatures
- Smelting and sintering crucibles
- Resistance support
- Furnace structures: tubes and insulation sleeves
- Soldering and brazing: nozzles, brazing supports
- PVD installations: masking supports, coating supports
Products in Machinable Boron Nitrid
Final Advanced Materials offers three standard products:
- Final®BN - Boron nitride with binder
- Final®BN HP - High-purity boron nitride without binder
- Final®BN HD2 - Boron nitride with greater mechanical resistance
We can offer various grades of boron nitride whose compositions contain other ceramics such as SiC, ZrO2, SiO2, AlN. We can also provide boron nitrides on request from Saint-Gobain, COMBAT® products (grade A, HP, AX05, M, M26 and ZSBN).
- Final®BN P
- Final®BN C
- Final®BN I
- Final®BN Z20
- Final®BN Z40
- Final®BN Z40D
- Final®BN S
- Final®BN A
Technical Data of Standard and Specific Products in Machinable Boron Nitrid
A comparative table for the available machinable Boron Nitrid can be downloaded in the data sheet.
Physical variables included in this documentation are provided by way of indication only and do not, under any circumstances, constitute a contractual undertaking. Please contact our technical service if you require any additional information.