Description
Alumina Ceramic Insulator is made of a ceramic material with Al2O3 as the main crystal phase. SENCER PRECISION CERAMICS can produce ceramic Insulators with an alumina content of 99% to 99.8%. The alumina has a compact structure, low activity, and high-temperature stability. The electrical properties are the best, with good mechanical properties, with a Mohs hardness of 9. With the performance of abrasion resistance, corrosion, and heat resistance, excellent vacuum sealing and heat dissipation enable alumina ceramic insulators are widely used in the auto and vessel, and aircraft industry.
Material Properties:
Composite | (wt %) | 99% | 99.5% | 99.8% |
Color | White or Ivory | White or Ivory | White or Ivory | |
Density | g/cm3 | 3.82 | 3.9 | 3.92 |
Hardness | HRA | 83 | 85 | 85 |
Flexural Strength | Mpa(psi*103 ) | 375 | 386 | 381 |
Gas Permeability | 0 | 0 | 0 | |
Water Absorption | % | 0 | 0 | 0 |
Thermal Shock Resistance | °C | 195 | 198 | 198 |
Thermal Expansion | ×10-6/℃ | 8.2 | 8.2 | 8.2 |
Dielectric Constant,20°C | 1MHz | 9.6 | 9.6 | 9.7 |
Dielectric loss, tanδ | 1MHz | 2×1014 | 1×1014 | 1×1014 |
Volume Resistivity,20℃ | Ω·cm | ≥1014 | ≥1014 | ≥1014 |
Dielectric Strength,DC | Ω·cm | 20 | 20 | 20 |
Compressive Strength | KV/mm | 2510 | 2700 | 2600 |
Fracture Toughness | MPa( psi * 103) | 350 | 350 | 350 |
Poisson’s Ratio | MPa | 0.22 | 0.22 | 0.22 |
Thermal conductivity | W/mK | 25.8 | 27 | 27 |
Type:
Alumina Ceramic Insulator
Material:
Available Color:
White or Ivory
Feature:
High-Heat Resistance, Excellent Insulation Performance. High Corrosion-Resistance, High Wear-Resistance, High Pressure Pressed
Size:
Size Customized, according to customer’s drawing, OEM.
Application:
Industrial ceramic, Technical ceramic.Advanced ceramic.Fine ceramic.
Advantage:
- Tight Tolerances
- Vairous Delivery Options
- 19 more Years Advanced Ceramics Experience
- Fast Delivery
- Multiple producing methods and Sintering methods
- Sample projects available
- Free Molding Charge
- Long lifetime
- Ultrasonic cleaning and dust-free packaging
- Metallization available
- Clean enough for UHV environment
Package:
Carton+Palletize,Carton,bubble paper inside,Wooden Box.Pls let us know if you have any special requirements.
Producing Methods:
Dry pressing with Fine Lapping. Isostatic pressing.Metallization.
Tolerance:
Up to ±0.002mm, as customer’s drawing or OEM.
Surface:
Ultrasonic cleaning and dust-free packaging or according to customer’s requirements.
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