The ion source is a device that creates atomic and molecular ions, which is in the vacuum chamber. Aluminum Nitride (AIN)/Boron Nitride (BN) Composite has excellent electrical insulator, thermal conductivity, sealing ability to vacuum and hasn't given off much gas. So it is plays an heat sinks and thermal transfer plate role in ion sources.
Material Advantages:
- High mechanical strength.
- High thermal conductivity.
- Low thermal expansion.
- Low dielectric loss.
- Excellent electrical insulation.
- High corrosion resistance–non-wetted by molten metals.
- Excellent Machinabilit–BN-AlN can be machined to high-precision complex shapes.
- It has excellent sealing ability to vacuum and hasn't given off much gas.
- High-frequency wave properties, allow visible infra-red light to pass through easily.
Material Properties:
| Properties | Units | BAN |
| Main Composition | / | BN+ALN |
| Color | / | Greyish- Green |
| Density | g/cm3 | 2.8~2.9 |
| Three-Point Bending Strength | MPa | 90 |
| Compressive Strength | MPa | 220 |
| Thermal Conductivity | W/m·k | 85 |
| Thermal Expansion
Coefficient (20-1000℃) |
10-6/K | 2.8 |
| Max Using Temperature | In Atmosphere ℃ | 900 |
| In Inactive Gas ℃ | 1750 | |
| In High Vacuum ℃ | 1750 |
Applications
- Heat sinks
- Vacuum components
- Components where low dielectric constant and dissipation factor are required
- Parts and components where a low coefficient of thermal expansion is required
- Electronic components where electrical insulation and heat dissipation are required
- Electric propulsion discharge channels for Hall Effect Thrusters
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Frequently Asked Questions
Looking for a plasma-resistant ion source ceramic parts supplier? Why choose BN-AlN composite over pure AlN or BN?
Pure BN lacks mechanical rigidity, while pure AlN is brittle and difficult to machine into intricate geometries. INNOVACERA supplies sintered BN-AlN (BAN) composites that merge the high thermal conductivity of AlN (85 W/m·K) with the machinability and thermal shock resistance of BN. It withstands halogen gas plasma erosion and high-vacuum temperatures up to 1750°C with near-zero outgassing, significantly prolonging ion source electrode and chamber life.
Need custom BN-AlN ceramic discharge channels or heat sinks? What precision machining tolerances can you achieve?
Yes. INNOVACERA manufactures custom BN-AlN composite components to tight tolerances (down to ±0.01 mm) without chipping or micro-cracks. We produce complex geometries based on your 2D/3D CAD drawings—including circular discharge channels for Hall Effect thrusters, thermal transfer plates, and RF microwave vacuum windows.
