Al₂O₃ precision alumina ceramic substrate
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Alumina ceramic substrate has good insulation, heat insulation and wear resistance. Because of its relatively low price and balanced performance, it is one of the most widely used ceramic materials. High-purity (99.5% and above) alumina has good corrosion resistance and plasma etching resistance, and is widely used in pan-semiconductor equipment.
Insulation, heat insulation, wear resistance, corrosion resistance, plasma etching resistance.
Pan-semiconductor equipment (LCD and LED manufacturing equipment) spare parts, insulation parts, wear parts, general machinery, hydraulic parts.
| Main ingredient content |
99%Alumina |
99.9%Alumina |
|
|
Densityg/cc |
3.86 |
3.93 |
|
|
Water absorption% |
0 |
0 |
|
| Mechanical properties |
Vickers hardnessGPa |
13.8 |
18.5 |
|
Bending strengthMPa |
350 |
350 |
|
|
Compressive strengthMPa |
2250 |
2600 |
|
|
Young's modulusGPa |
330 |
380 |
|
|
Poisson's ratio |
0.23 |
0.23 |
|
|
Fracture toughnessMPa·m1/2 |
3 |
4~5 |
|
| Thermal characteristics |
Coefficient of linear expansion40~400℃*10-6/℃ |
7.1 |
8.2 |
|
Thermal conductivity20℃W/(m·K) |
25 |
32 |
|
|
Specific heatJ/(kg·K)*103 |
0.78 |
0.78 |
|
|
Thermal shock resistance ℃ |
200 |
220 |
|
| Electrical characteristics |
Volume resistivity20℃ Ω·cm |
＞1014 |
＞1015 |
|
Dielectric strengthKV/mm |
16 |
17 |
|
|
Dielectric constant |
9 |
9.7 |
|
|
Dielectric loss factor*10-4 |
3 |
1 |
|
贸易信息
| Online quote | ||||
| Price | MOQ | Lead Time | Customization | Sample |
| Negotiable | Negotiable | Contact Supplier | Yes | Yes |
