Customization: | Available |
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Application: | Electronic Devices, Lighting, Power Supply, Semiconductors, Refractory, Structure Ceramic, Industrial Ceramic, Functional Ceramic |
Material: | Al2O3 |
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Advantages of Laser Scribing
Alumina Ceramic Substrate | ||||
Item | Unit | 96% Al2O3 | 99.6% Al2O3 | |
Mechanical Properties | ||||
Color | / | / | White | Ivory |
Density | Drainage Method | g/cm3 | ≥3.70 | ≥3.95 |
Light Reflectivity | 400nm/1mm | % | 94 | 83 |
Flexural Strength | Three Point Bending | MPa | >350 | >500 |
Fracture Toughness | Indentation Method | MPa·m1/2 | 3.0 | 3.0 |
Vickers Hardness | Load 4.9N | GPa | 14 | 16 |
Young's Modulus | Stretching Method | GPa | 340 | 300 |
Water Absorption | % | 0 | 0 | |
Camber | / | Length‰ | T≤0.3: ≤5‰, Others: ≤3‰ | ≤3‰ |
Thermal Properties | ||||
Max. Service Temperature (Non-loading) | / | ºC | 1200 | 1400 |
CTE (Coefficient of Thermal Expansion) |
20-800ºC | 1×10-6/ºC | 7.8 | 7.9 |
Thermal Conductivity | 25ºC | W/m·K | >24 | >29 |
Thermal Shock Resistance | 800ºC | ≥10 Times | No Crack | No Crack |
Specific Heat | 25ºC | J/kg·k | 750 | 780 |
Electrical Properties | ||||
Dielectric Constant | 25ºC, 1MHz | / | 9.4 | 9.8 |
Dielectric Loss Angle | 25ºC, 1MHz | ×10-4 | ≤3 | ≤2 |
Volume Resistivity | 25ºC | Ω·cm | ≥1014 | ≥1014 |
Dielectric Strength | DC | KV/mm | ≥15 | ≥15 |
1. Laser Processing
(1) Hole Size
Alumina Ceramic Substrate | |
Hole Diameter (mm) | Standard Tolerance (mm) |
φ≤0.5 | 0.08 |
φ>0.5 | 0.2 |
Alumina Ceramic Substrate | |
Substrate Thickness (mm) | the Percentage of Laser Scribe Line Depth to Thickness (%) |
0.2-0.3 | 40%±5% |
0.3<T≤0.5 | 50%±3% |
0.5<T≤1.0 | 43%±3% |
1.2 | 55%±3% |
1.5 | 55%±3% |
2.0 | 55%+10% |
The scribing spot can be in different sizes. Generally there are small spot 0.03-0.04mm (Substrate Thickness≤0.5mm ) and large spot 0.08-0.1mm (Substrate Thickness>0.5mm), and the accuracy is ±0.01mm. |
2. Product Specification
Products of various specifications can be produced. The table below shows our standard thicknesses and sizes.
Alumina Ceramic Substrate | |||||||
99.6% Al2O3 | |||||||
Thickness (mm) | Maximum Size (mm) | Shape | Molding Technique | ||||
As Fired | Lapped | Polished | Rectangular | Square | Round | ||
0.1-0.2 | 50.8 | 50.8 | √ | √ | Tape Casting | ||
0.25 | 114.3 | 114.3 | √ | Tape Casting | |||
0.38 | 120 | 114.3 | 114.3 | √ | Tape Casting | ||
0.5 | 120 | 114.3 | 114.3 | √ | Tape Casting | ||
0.635 | 120 | 114.3 | 114.3 | √ | Tape Casting | ||
Other special thicknesses within the thickness range of 0.1-0.635mm can be achieved by lapping. | |||||||
96% Al2O3 | |||||||
Thickness (mm) | Maximum Size (mm) | Shape | Molding Technique | ||||
As Fired | Lapped | Polished | Rectangular | Square | Round | ||
0.25 | 120 | 114.3 | 114.3 | √ | Tape Casting | ||
0.3 | 120 | 114.3 | 114.3 | √ | Tape Casting | ||
0.38 | 140×190 | √ | Tape Casting | ||||
0.5 | 140×190 | √ | Tape Casting | ||||
0.635 | 140×190 | √ | Tape Casting | ||||
0.76 | 130×140 | √ | Tape Casting | ||||
0.8 | 130×140 | √ | Tape Casting | ||||
0.89 | 130×140 | √ | Tape Casting | ||||
1 | 280×240 | √ | Tape Casting | ||||
1.5 | 165×210 | √ | Tape Casting | ||||
2 | 500×500 | √ | Tape Casting | ||||
Other special thicknesses within the thickness range of 0.1-2.0mm can be achieved by lapping. |
Alumina Ceramic Substrate | ||||
Item | Substrate Thickness (mm) | Standard Tolerance (mm) | Best Tolerance (mm) | Laser Cutting Tolerance (mm) |
Length and Width Tolerance | / | ±2 | ±0.15 | |
Thickness Tolerance | T<0.3 | ±0.03 | ±0.01 | |
0.30-1.0 | ±0.05 | ±0.01 | ||
T>1.0 | ±10% | ±0.01 |
Alumina Ceramic Substrate | |||
Material | Surface Roughness (μm) | ||
As Fired | Lapped | Polished | |
96% Al2O3 | Ra 0.2-0.75 | Ra 0.3-0.7 | Ra ≤0.05 |
99.6% Al2O3 | Ra 0.05-0.15 | Ra 0.1-0.5 | Ra ≤0.05 |