Metallized ceramic tube

Metallized ceramic tube

No.ParameterTypical Value / SpecificationUnit
1Alumina Purity95%or 99% %
2Bulk Density3.63g/cm³
3Thermal Conductivity (25°C)22.45W/m·K
4Coefficient of Thermal Expansion (20–1000°C)8.26×10⁻⁶/°C
5Flexural Strength≥340MPa
6Dielectric Strength≥8.3kV/mm
7Dielectric Constant (1 MHz)9.1@1MHz
8Dielectric Loss (1 MHz)≤0.0004@1MHz
9Metallization Layer (Mo/Mn)15–25 μm
10Plating Layer (Ni/Cu/Au etc.)8–10  μm
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Metalized Ceramics with Mo-Mn Coating for High Power Applications

Meetcera Technical Ceramics produces reliable medical X-ray components—including anodes, cathodes, complete X-ray tubes, and getter assemblies—using advanced ceramic-to-metal sealing technology. We combine high-purity alumina ceramics  with various metal components, achieving hermetic sealing through molybdenum-manganese metallization and brazing processes.

Metallized Ceramics Applications:

  • Ceramic Feed-through insulators,
  • Ceramic Headers,
  • Ceramic High-power receptacles,
  • Ceramic Insulating discs,
  • Ceramic Insulator rings and cylinders,
  • Ceramic Precipitator products,
  • Ceramic Power switches,
  • Ceramic Traveling wave tubes,
  • Ceramic Vacuum interrupters,
  • Ceramic components for Windows,
  • Ceramic Power grid tubes,
  • X-ray Ceramic tubes

Metallized Ceramics Joining types:

  • Ceramic + Mo/Mn Metallized + plating Ni
  • Ceramic + Mo/Mn Metallized + plating Ag
  • Ceramic + Mo/Mn Metallized + plating Au
  • Ceramic + printing Ag

Key Performance Features

  • Superior hermetic sealing, significantly reducing leak risk
  • Excellent thermal shock resistance and high-temperature stability
  • Flexible design with no size limitations, supporting higher power margins and enhanced safety factors
  • Outstanding electrical insulation and high dielectric strength, ideal for high-voltage and high-vacuum environments
  • Repeatable and consistent manufacturing processes, ensuring cost competitiveness and batch reliability

Application Scenarios

  • Medical CT Scanners: High-power rotating anode tubes with reliable high-voltage insulation and vacuum sealing.
  • Digital Radiography (DR / DRF) :Stable, long-life performance for frequent high-frequency exposures in fixed and mobile systems.
  • Mammography: Ultra-reliable components for high-precision, low-dose imaging and strict safety standards.
  • Interventional Radiology (C-arm / DSA): Thermal stability and hermetic sealing for continuous high-power operation in mobile and fixed systems.

Metallized Ceramic Catalog Download PDF