Metallized Ceramic Components

Metallized Ceramic Stepped Ring

Custom Metallized Ceramic Stepped Ring, metallized alumina ceramic stepped rings with selective Mo-Mn metallization and optional nickel, silver or gold finishes for reliable ceramic-to-metal joining.

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Description

TecCera supplies Metallized Ceramic Stepped Ring,custom metallized alumina ceramic stepped rings for ceramic-to-metal joining, electrical insulation and hermetic sealing applications. Metallization can be applied to selected flat, cylindrical or stepped surfaces according to the customer’s drawing.

A typical metallization system consists of a molybdenum-manganese (Mo-Mn) base layer followed by nickel plating. Silver, gold and other surface finishes can also be provided when required. The metallized areas are designed to support subsequent brazing or soldering to compatible metal components.

Typical Applications

  • Electrical feedthrough insulators
  • Vacuum interrupters and switching components
  • High-voltage and high-frequency electrical assemblies
  • Sensor and power-module packages
  • Vacuum electronic components
  • Insulating rings, discs and cylindrical components
  • X-ray and RF/microwave equipment
  • Custom ceramic-to-metal sealed assemblies

Available Metallization and Finishing Options

  • Alumina ceramic + Mo-Mn metallization + nickel plating
  • Alumina ceramic + Mo-Mn metallization + silver finish
  • Alumina ceramic + Mo-Mn metallization + gold plating
  • Alumina ceramic + screen-printed silver metallization
  • Custom metallization patterns and surface finishes

Information Required for Quotation

Please provide the following information:

  • Ceramic grade
  • Drawing, dimensions and tolerances
  • Metallized area and pattern
  • Required metallization and plating system
  • Brazing or soldering method
  • Mating metal material
  • Operating temperature and environment
  • Hermeticity or joint-strength requirements
  • Prototype and production quantities

TecCera will review the application requirements and recommend an appropriate ceramic grade, metallization system and surface finish.

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 @1MHz
Dielectric Loss (1 MHz) ≤0.0004 @1MHz
Metallization Layer (Mo/Mn) 15–25 μm
Plating Layer (Ni/Cu/Au etc.) 8–10 μm
  • Product: Metallized alumina ceramic stepped ring
  • Ceramic material: 95%, 96% or 99% alumina (Al₂O₃)
  • Appearance: White ceramic with metallic coating
  • Base metallization: Mo-Mn
  • Typical metallization thickness: 15–25 μm
  • Optional plating: Ni, Ag, Au or other specified finishes
  • Typical plating thickness: 8–10 μm
  • Dimensions and tolerances: Custom-made according to drawings
  • Brand: TecCera

The values above are typical options rather than guaranteed specifications. Final materials, layer thicknesses and tolerances should be confirmed for each drawing and application.

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.

  1. Inquiry
  2. Technical Review
  3. Quotation
  4. Order

Need a Custom Ceramic Component?

Send us your drawing, dimensions, material requirements, quantity and application conditions.

Request a Quote