Boron Nitride
Boron Nitride Grade ZSBN
Developed for demanding applications requiring the combination of thermal conductivity, high wear resistance and boron nitrides corrosion resistance, Grade ZSBN boron nitride is a composite material combining the best thermal performance and machinability characteristics of hot-pressed boron nitride with the strength and non-reactivity of silicon carbide and zirconia.
Grade ZSBN is a uniquely high-performing solid that is especially suited for molten metal applications such as continuous casting breakrings where wear resistance and thermal conductivity are essential.
Key Properties
Chemically – Unparalleled resistance to molten metal wetting due to boron nitride content.
Thermally – Excellent high temperature operation and thermal shock resistance.
Mechanically – Excellent wear resistance and increased strength from zirconia and a small amount of silicon carbide. This feature, unique to ZSBN, results in remarkable corrosion resistance over a wide range of temperatures.
Machinability – Grade ZSBN is easily machined, even to complex shapes and forms, quickly and inexpensively. Machining tolerances of 0.002” or better are achievable.
Applications & Product Data
Break rings
Components
Continuous casting
Crucibles
Deck plates
Heat treatment fixtures
High temperature bearings
High temperature mechanical components
High temperature valves
Jigs
Moulds
Motel metals and glass casting
Muffles
Nozzles for transfer or atomization
Side dams
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Product Data | ||
---|---|---|
Thermal Conductivity (W/M℃) | Perpendicular | Parallel |
25℃ | 40.21 | 22.62 |
316℃ | 29.39 | 15.46 |
437℃ | 27.16 | 13.98 |
557℃ | 24.96 | 13.32 |
711℃ | 23.11 | 12.78 |
918℃ | 21.88 | 11.65 |
Like pure Boron Nitride, the ZSBN crystal structure orients itself during hot pressing. Therefore, many physical properties of CombatⓇ ZSBN are anisotropic and are reported as a function of the orientation of the piece relative to hot pressing (perpendicular or parallel). |