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Transparent spinel, also known as magnesium aluminum transparent ceramics, finds diverse applications in optics, electronics, and structural components.
Transparent spinel is adept at crafting windows and lenses spanning the visible to mid-infrared spectrum. The theoretical transmittance of 3~5μm closely approaches 87%, aligning with materials like ALON and sapphire. Notably, it exhibits superior performance in mid-infrared imaging systems with a cutoff wavelength slightly longer than both counterparts.
The properties of transparent ceramic spinel mirror those of alumina, making it suitable for various high-performance substrate materials in applications such as thick film circuits, thin film circuits, integrated circuit carriers, and chip packaging.
|
Item |
Unit |
Typical Values |
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|
Molecular Formula |
- |
MgAl2O4 |
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|
Crystal System |
- |
Cubic |
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|
Density |
g/cm3 |
3.57-3.58 |
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|
Physical Properties |
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Mohs Hardness |
- |
8.5 |
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|
Vickers Hardness |
N/mm2 |
>1.26 x 104 |
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|
Modulus of Elasticity |
Gpa |
275 |
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|
Flexural Strength |
MPa |
140-200 |
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Compressive Strength |
MPa |
>500 |
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|
DC Breakdown Strength |
Kv/mm |
34.5 |
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|
Refractive Index |
|||||
|
486.1nm |
1.72433 |
2.2um |
1.6848 |
||
|
546.1nm |
1.71976 |
3.0um |
1.6678 |
||
|
589.3nm |
1.71611 |
4.0um |
1.6387 |
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|
The Thermodynamic Property |
|||||
|
Melting Point |
℃ |
2135 |
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Thermal Conductivity at 20℃ |
W/m•k |
17.0 |
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Thermal Conductivity at 100℃ |
W/m•k |
16.4 |
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|
Thermal Conductivity at 200℃ |
W/m•k |
15.7 |
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Thermal Conductivity at 300℃ |
W/m•k |
14.9 |
|||
|
Thermal Expansion Coefficient 20-300℃ |
10-6/℃ |
6.72 |
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|
Thermal Expansion Coefficient 20-400℃ |
10-6/℃ |
7.07 |
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Thermal Expansion Coefficient 20-500℃ |
10-6/℃ |
7.33 |
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|
Electrical Property |
|||||
|
Dielectric Strength |
MV/m |
>20 |
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|
Dielectric Constant at 20℃ |
MHz |
8.2 |
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|
Dielectric Loss at 20℃ |
MHz |
1.4x10-4 |
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|
Volume Resistivity at 100℃ |
Ω•cm |
1.2x1016 |
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Volume Resistivity at 300℃ |
Ω•cm |
6.3x1014 |
|||
|
Volume Resistivity at 500℃ |
Ω•cm |
9.4x1012 |
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Transparent Spinel Rod offers several advantages:
Hence, it is suitable for diverse applications in high-temperature, high-pressure, and corrosive environments, including equipment observation windows, gas detector windows, high-temperature boiler water level gauges, commercial barcode scanner windows, downhole detection sensors, low-voltage and high-frequency capacitors, and various goggles.
ACM's Transparent Spinel Rod undergoes careful handling to minimize damage during storage and transportation, ensuring the preservation of product quality in its original condition.
