Dongguan Ming Rui Ceramic Technology Co.,ltd |
|
Alumina components can be formed by a variety of manufacturing techniques such as uniaxial pressing, isostatic pressing, injection molding and extrusion. Finishing can be accomplished by precision grinding and lapping, laser machining and a variety of other processes.
The alumina ceramic components produced by Elan Technology are suitable for metallization in order to create a component that is easily brazed with many materials in subsequent operations. Elan Technology offers a range of alumina compositions to meet your most demanding applications.
Overview of Physical Properties
Good electrical insulation
High mechanical strength
Excellent wear resistance
Excellent corrosion resistance
Low dielectric constant
Overview of Applications
Pump seals and other components
Wear resistant inserts
Insulating washers or bushings
Semiconductor components
Aerospace components
Automotive sensors
Electrical or electronic insulators
Material | Alumina | Zirconia | ||||
Properties | Units | AL997 | AL995 | AL99 | AL95 | ZrO2 |
%Alumina | —— | 99.70% | 99.50% | 99.00% | 95% | —— |
Color | —— | Ivory | Ivory | Ivory | Ivory & White | ivory white |
Permeability | —— | Gas-tight | Gas-tight | Gas-tight | Gas-tight | Gas-tight |
Density | g/cm³ | 3.94 | 3.9 | 3.8 | 3.75 | 5.89 |
Straightness | —— | 1‰ | 1‰ | 1‰ | 1‰ | 1‰ |
Hardness | Mohs Scale | 9 | 9 | 9 | 8.8 | 8.5 |
Water Absorption | —— | ≤0.2 | ≤0.2 | ≤0.2 | ≤0.2 | 0 |
Flexural Strength (Typical 20℃) | Mpa | 375 | 370 | 340 | 304 | 1200 |
Compressive Strength (Typical 20℃) | Mpa | 2300 | 2300 | 2210 | 1910 | 5700 |
Coefficient of Thermal Expansion (25℃ to 800℃) | 10-6/℃ | 7.6 | 7.6 | 7.6 | 7.6 | 10 |
Dielectric Strength (5mm Thickness) | AC-kv/mm | 10 | 10 | 10 | 10 | —— |
Dielectric Loss 25ºC@1MHz | —— | < 0.0001 | < 0.0001 | 0.0006 | 0.0004 | 0.001 |
Dielectric Constant | 25º C@1MHz | 9.8 | 9.7 | 9.5 | 9.2 | 29 |
Thermal Conductivity (25℃) | W/m·K | 35 | 35 | 34 | 20 | 3 |