Transparent Spinel Sheet Descriptions:
Transparent spinel (Magnesium aluminum transparent ceramics) has many applications in optics, electronics and structure.
Transparent spinel can be used to prepare visible to mid infrared windows and lenses. The theoretical transmittance of 3~5μm is close to 87%, which is close to ALON and sapphire, and the cutoff wavelength is slightly longer than both, especially in the mid-infrared imaging system performance.
The properties of transparent ceramic spinel and alumina are similar. It’s suitable for various circuit components such as thick film circuit, thin film circuit, integrated circuit carrier and chip packaging and other high-performance substrate materials.
Transparent Spinel Sheet Specifications:
|
Item
|
Unit
|
Typical Values
|
|
Molecular Formula
|
-
|
MgAl2O4
|
|
Crystal System
|
-
|
Cubic
|
|
Density
|
g/cm3
|
3.57-3.58
|
|
Physical Properties
|
|
Mohs Hardness
|
-
|
8.5
|
|
Vickers Hardness
|
N/mm2
|
>1.26 x 104
|
|
Modulus of Elasticity
|
Gpa
|
275
|
|
Flexural Strength
|
MPa
|
140-200
|
|
Compressive Strength
|
MPa
|
>500
|
|
DC Breakdown Strength
|
Kv/mm
|
34.5
|
|
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
|
|
The Thermodynamic Property
|
|
Melting Point
|
ºC
|
2135
|
|
Thermal Conductivity at 20℃
|
W/m•k
|
17.0
|
|
Thermal Conductivity at 100℃
|
W/m•k
|
16.4
|
|
Thermal Conductivity at 200℃
|
W/m•k
|
15.7
|
|
Thermal Conductivity at 300℃
|
W/m•k
|
14.9
|
|
Thermal Expansion Coefficient 20-300℃
|
10-6/℃
|
6.72
|
|
Thermal Expansion Coefficient 20-400℃
|
10-6/℃
|
7.07
|
|
Thermal Expansion Coefficient 20-500℃
|
10-6/℃
|
7.33
|
|
Electrical Property
|
|
Dielectric Strength
|
MV/m
|
>20
|
|
Dielectric Constant at 20℃
|
MHz
|
8.2
|
|
Dielectric Loss at 20℃
|
MHz
|
1.4x10-4
|
|
Volume Resistivity at 100℃
|
Ω•cm
|
1.2x1016
|
|
Volume Resistivity at 300℃
|
Ω•cm
|
6.3x1014
|
|
Volume Resistivity at 500℃
|
Ω•cm
|
9.4x1012
|
Transparent Spinel Sheet Features:
Transparent Spinel has the following advantages:
-no scratches under harsh conditions;
-the thickness can be reduced by more than 60% under the same protection requirements, and the weight can be effectively reduced;
-in the case of the same thickness, the protection ability can be improved.
Therefore, it can be used in various high temperature, high pressure and corrosive environment of equipment observation window, gas detector window, high temperature boiler water level gauge, high temperature and high pressure equipment observation window, commercial bar code scanner window, downhole detection sensors, low voltage and high frequency capacitors, all kinds of goggles, etc.
Transparent Spinel Sheet Applications:
Transparent spinel (Magnesium aluminum transparent ceramics) has many applications in optics, electronics and structure.
Transparent Spinel Sheet Packaging:
SAM’s Transparent Spinel Sheet is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.
Transparent Spinel Sheet FAQs
Q1. How should Transparent Spinel Sheets be cleaned and maintained?
Cleaning: Clean with non-abrasive cleaners and soft cloths to avoid scratching the surface. Ultrasonic cleaning can be used for thorough cleaning.
Maintenance: Regularly inspect for damage or contamination. Store in a clean, dry environment to prevent dust and other contaminants.
Q2: What sizes and shapes are available for Transparent Spinel Sheets?
Transparent spinel sheets are available in various sizes and thicknesses to meet different application needs. Custom sizes and shapes can also be manufactured to meet specific requirements.
Q3: Can Transparent Spinel Sheets be coated or treated for specific applications?
Yes, transparent spinel sheets can be coated or treated with various optical coatings to enhance performance for specific applications. Anti-reflective coatings, hard coatings, and other specialized treatments can be applied to improve optical performance and durability.
