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Insulation Ceramic Parts, Al2O3 Ceramic for Industry Appliation
Aluminum Oxide, Al2O3 and ZrO2 are the most widely applied and cost effective technical ceramic material. It offers a combination of superior mechanical strength and electrical properties, wear resistance and corrosion resistance. The maximum working temperature is up to 1700 °C with relatively high thermal conductivity. It is also an electrically insulating material with a high electrical resistivity. The good corrosion resistance makes it insoluble in water and slightly soluble in strong acid and alkaline solution.
|
95% Al2O3 |
99% Al2O3 |
ZrO2 |
Color |
- |
white |
ivory |
Density |
g/cm³ |
3.65 |
3.88 |
Water Absorption |
% |
0 |
0 |
Young's Modulus |
Gpa |
280 |
350 |
Vickers Hardness |
Gpa |
14 |
20 |
Flexural Strength (at R.T.) |
Mpa |
280 |
300 |
Compressive Strength (at R.T.) |
Mpa |
2000 |
2500 |
Thermal Conductivity (at R.T.) |
W/(m.K) |
18-25 |
30 |
Thermal Shock Resistance |
ΔT(°C) |
220 |
180-200 |
Max. Working Temperature (at R.T.) |
°C |
1500 |
1700 |
Volume Resistivity (at R.T.) |
Ω.cm |
>10^15 |
>10^14 |
Dielectric Constant (1 MHz at R.T.) |
- |
9.50 |
9.80 |
Dielectric Strength |
kV/mm |
16 |
22 |
Wire and thread guides |
- Ballistic Armor |
Mechanical seals |
- Wear resistant linings |
Seal faces |
- Semiconductor parts |
Valve seats |
- Laser cavities |
Machine components |
- Shot blast nozzles |
High temperature electrical insulators |
- Knife Sharpeners |
High voltage insulators |
- Precision shafts & axles in high wear environments |
Electronic components & substrates |
- Roller & Ball Bearings |
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