High Purity White Industrial 95% AL2O3 / Alumina / Aluminum Oxide Ceramic Substrate
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Yixing Feifan Ceramics Co.,Ltd
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High Purity White Industrial 95% AL2O3 / Alumina / Aluminum Oxide Ceramic Substrate
Description:
Alumina balls,nozzles,substrates have the performances of high purity,good hermetical property,good hardness,low abrade,anti-corrode,high grinding efficiency,no pollution.
Widely implicated in the areas of ceramic,electric power,petroleum,chemical industry and light industry, they are the liner and grinding medium for various ceramic material, α-Al2O3 powder, flake alumina, kaolin, fusible corundum,porcelain enamel,dye,ceramic glaze,dope,printing ink,special glass,various ball mill machines.
1. good hermetical property
2. high purity
3. low abrade
4. good hardness
Applications:
Our products can be used in mechanical,electronics,chemical,textile,aeronautic and other fields.
Specifications:
95%,99%,99.7% Al2O3 Material Parameters:
Item |
Test Condition |
Unit Symbol |
95%Alumina ceramics |
99%Alumina ceramics |
99.7%Alumina ceramics |
The main chemical ingredient |
Al2O3 |
Al2O3 |
Al2O3 |
||
Bulk Density |
g/cm3 |
3.6 |
3.89 |
3.96 |
|
Maximum Use Temperature |
1450℃ |
1600℃ |
1650℃ |
||
Water absorption |
% |
0 |
0 |
0 |
|
ROHS Hardness |
≥85 |
≥89 |
≥89 |
||
Flexural strength |
20° C |
MPa (psi x 103) |
358 (52) |
550 |
550 |
Compressive Strength |
20° C |
MPa (psi x 103) |
2068 (300) |
2600(377) |
2600(377) |
Fracture Toughness |
K(I c) |
Mpa m1/2 |
4-5 |
5.6 |
6 |
Coefficient of thermal expansion |
25-1000° C |
1X 10-6/°C |
7.6 |
7.9 |
8.2 |
Coefficient of thermal conductivity |
20° C |
W/m °K |
16 |
30.0 |
30.4 |
Thermal Shock Resistance |
Tc |
°C |
250 |
200 |
200 |
Dielectricity constant |
1MHz.25℃ |
9 |
9.7 |
9.7 |
|
Dielectric strength |
ac-kV/mm (ac V/mil) |