



Metallized Ceramic Alumina Insulator for Brazing
- Description
- Inquiry
Metallized Ceramic Alumina Insulator for Brazing
Material : 95.0% alumina or high purity alumina with Metalization treatment
– Either CIP or dry press formed bodies with secondary fine-machining
– High precision and good appearance after metalization
– Easy for brazing with Kovar alloy directly
– High bonding strength after brazing with kovar parts
– Good hermetic sealing result after brazing
– Good insulation, anti-magnetic, static electricity-free character for feedthrough use
– Excellent thermal shock resistance and good thermal stability after brazing
– Anti corrosion & abrasion resistance in harsh working environments
– Professional ceramic R&D team is available for your requests of various metalized ceramic parts
Advantages:
1. Various size to very tight dimensional tolerances.
2. Excellent mechanical, electrical and thermal characteristics.
3. Various sizes and pattern design Excellent bonding strength.
4. Ceramics have high flexural strength,high tensile strength and good air tightness.
Metallized Ceramic Alumina Insulator for Brazing
Material Performance
Item | Unit | Steatite ceramic | 95 Al2O3 | 96 Al2O3 | 99 Al2O3 | |
Physical Characteristics | Heat resistance | 0C | 1100 | 1500 | 1550 | 1800 |
Bulk density | g/cm3 | 2.7 | 3.6 | 3.6 | 3.9 | |
Water absorption | % | 0 | 0 | 0 | 0 | |
Mechanical Characteristics | Flexural strength | Mpa | 145 | 320 | 340 | 360 |
Hardness vickers | Gpa | 5.7 | 12.2 | 13.5 | 15.6 | |
Elastic modulus | Gpa | 120 | 280 | 320 | 370 | |
Poisson’s ratio | 0.21 | 0.22 | 0.23 | 0.23 | ||
Thermal Characteristics | Linear expansion coefficient | (20-5000C) 10-6/0C | 7.9 | 7.1 | 7.2 | 8 |
Thermal conductivity | w/(m.k) | 2.5 | 16 | 24 | 32 | |
Specific Heat | *10-3J/(kg*K) | 0.75 | 0.78 | 0.78 | 0.9 | |
Electrical Characteristics | Dielectric constant (1MHZ) | – | 6.2 | 9 | 9.4 | 9.9 |
Dielectric loss angle | *10-4 | 18 | 15 | 5 | 1 | |
Dielectric strength | *106V/m | 18 | 12 | 15 | 15 |
Suitable industries:DC Relayer, Fuel Cell Units, New Energy Vehicles, Charging Piles, DC Railway, Electric Forklifts, Electrical Appliance, Electric Products
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