Metallized Ceramic Components
Mo-Mn Metallized Corrugated Alumina Ceramic Tube
Mo-Mn Metallized Corrugated Alumina Ceramic Tube, Custom corrugated alumina ceramic insulators with selective Mo-Mn metallization for high-voltage, vacuum, and ceramic-to-metal brazed assemblies.
Description
Typical Applications
- High-voltage electrical feedthrough assemblies
- Vacuum interrupters and power switches
- RF and microwave vacuum devices
- Traveling-wave tubes and power grid tubes
- X-ray and vacuum-equipment components
- High-power electrical receptacles
- Sensor and power-module packages
- Custom ceramic-to-metal sealed assemblies
Metallization and Plating Options
- Alumina ceramic with Mo-Mn metallization
- Mo-Mn metallization with nickel plating
- Mo-Mn metallization with silver plating
- Mo-Mn metallization with gold plating
- Custom selective metallization patterns
Mo-Mn metallization with nickel plating is commonly used for ceramic-to-metal brazing. Silver printing is a separate metallization process for selected electrical or lower-temperature joining applications and should be evaluated according to the specific assembly requirements.
Hermetic Sealing
Metallization prepares the ceramic surface for joining but does not by itself guarantee a hermetic seal. Final hermetic performance depends on the ceramic and metal design, thermal-expansion compatibility, braze alloy, joint geometry, brazing parameters, and leak testing of the completed assembly.
Information Required for Quotation
Please provide the following information:
- Ceramic grade
- Technical drawing
- Overall dimensions and tolerances
- Corrugation profile
- Metallized area and pattern
- Metallization and plating requirements
- Mating metal material
- Brazing alloy
- Operating voltage and temperature
- Vacuum, gas, or atmospheric environment
- Required hermetic leak rate
- Prototype and production quantities
TecCera will review your application requirements and recommend an appropriate ceramic grade, metallization system, and plating configuration.
Technical Specifications
| Parameter | Typical Value / Range | Unit |
|---|---|---|
| Al₂O₃ Purity | 95-99 | % |
| Bulk Density | ≥ 3.63 | g/cm³ |
| Thermal Conductivity (25°C) | 22.45 | W/m·K |
| Coefficient of Thermal Expansion (20–1000°C) | 8.26 | ×10⁻⁶/°C |
| Flexural Strength | ≥340 | MPa |
| Dielectric Strength | ≥8.3 | kV/mm |
| Dielectric Constant (1 MHz) | 9.1 | - |
| Dielectric Loss (1 MHz) | ≤0.0004 | - |
| Base Metallization | Mo-Mn | - |
| Metallization Thickness | 15-25 | μm |
| Optional Plating | Ni, Cu, Au or other specified metal | - |
| Plating Thickness | 8-10 | μm |
| Metallized Area | End face or custom pattern | - |
Technical Resources
Download the TecCera brochure for metallized alumina components, ceramic-to-metal brazed assemblies, hermetic seals, and vacuum feedthrough solutions.
Download Metallized Ceramics Brochure (PDF)How to Get a Quote
Send us your drawing or technical requirements. We will review the material, dimensions, tolerances and application conditions before quotation.
- Inquiry
- Technical Review
- Quotation
- Order
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