High-Temperature Ceramic Brazing Parts

High-Temperature Ceramic Brazing Parts

No. Parameter Typical Value / Specification Unit
1 Alumina Purity 95%or 99%  %
2 Bulk Density 3.63 g/cm³
3 Thermal Conductivity (25°C) 22.45 W/m·K
4 Coefficient of Thermal Expansion (20–1000°C) 8.26 ×10⁻⁶/°C
5 Flexural Strength ≥340 MPa
6 Dielectric Strength ≥8.3 kV/mm
7 Dielectric Constant (1 MHz) 9.1 @1MHz
8 Dielectric Loss (1 MHz) ≤0.0004 @1MHz
9 Metallization Layer (Mo/Mn) 15–25 μm
10 Plating Layer (Ni/Cu/Au etc.) 8–10   μm

High-Temperature Ceramic Brazing Parts

High-temperature ceramic brazing parts are developed for assemblies exposed to elevated temperatures, thermal cycling, or demanding industrial environments. Proper material matching and brazing process control help reduce joint cracking, delamination, and premature leakage.

Key Features

  • High-temperature resistance
  • Thermal-cycle stability
  • Strong ceramic-metal bonding
  • Controlled residual stress
  • Custom joint geometry

Materials

Depending on operating conditions, alumina,  stainless steel, Kovar, nickel alloys, molybdenum, and other materials may be considered.

Engineering Considerations

The coefficient of thermal expansion is a critical design factor. Joint geometry, intermediate layers, filler selection, brazing temperature, and cooling conditions must work together to control thermal stress.

Applications

Suitable for aerospace equipment, semiconductor systems, vacuum devices, power electronics, sensors, and high-temperature industrial equipment.

If your assembly operates above 500°C or experiences repeated thermal cycling, provide the temperature profile so the ceramic-metal joint can be evaluated before brazing.

Metallized Ceramic Catalog Download PDF