Ceramic to Metal Brazing in Vacuum or Reducing Furnace
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Ceramic to Metal Brazing in Vacuum or Reducing Furnace
Ceramic-to-Metal brazing components are widely used in electrical engineering due to their good performance for high-vacuum, high-voltage and high-pressure applications. We manufacture a large range of metalized ceramic components with the latest technologies in order to meet the needs of our clients. Our metallizing processes could be customized according to clients’ requirements.
Material :
· Insulator-Glazed Ceramic 95% or 99% Al2O3 (white or pink)
· Feedthrugh – Nickel, Kovar, Copper
· Weld Sheath/Flange-Nickel, Kovar, 304 Stainless Steel
Features:
· Feedthroughs are custom made to specifications that determined by the electrical, temperature, and environmental condition requirements.
· Standard parts are available
Characteristics
· High Abrasion Resistance
· High Mechanical Strength
· Pressures over 10,000 PSI
· High Temperature Usage
· Low Dielectric Loss
· Mass Spectrometer Leak Tested
· High Chemical Stability
Typical Applications:
· Aerospace
· Defense Industries
· Aviation
· Medical Equipment
· Industrial Application
· Nuclear Equipment
Ceramic to Metal Brazing in Vacuum or Reducing Furnace
Product Description
Major components | 95% 96%.99 Al2O3 | |||
Density | g/cm3 | 3.6 | ||
Material properties | Water absorption | % | O | |
Sintering temperature | °C | 1600-1800 | ||
Physical properties | Hardness | HV | 1500 | |
Flexural strength | Kgf/cm2 | 3000 | ||
Compressive strength | Kgf/cm2 | 25000 | ||
Fracture toughness | Map.m3/2 | 3-4 | ||
Maximum temperature | °C | 1800 | ||
Thermal properties | Coefficient of thermal expansion | /°C | 8*10-6 | |
Heat shock | T(°C) | 220 | ||
Thermal conductivity | W/m.k(25-300°C) | 25 14 | ||
20°C | >1012 | |||
Volume resistivity | 100°C | >.cm | 1012-1013 | |
Electrical Characteristics | 300°C | >1010 | ||
Insulation breakdown strength | KV/mm | 18 | ||
dielectric constant | 100MHz(E) | 9.5 |
Applications: | |
Feed-through insulators | Power switches |
Insulating discs | Traveling wave tubes |
Insulator rings and cylinders | Vacuum interrupters |
Headers | Windows |
High-power receptacles | Power grid tubes |
Precipitator products | X-ray tubes |
Joining types: |
Ceramic + Mo/Mn Metallized + plating Ni |
Ceramic + Mo/Mn Metallized + plating Ag |
Ceramic + Mo/Mn Metallized + plating Au |
Ceramic + printing Ag |
* Special types are available according to customer’s drawings or samples. |
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