Transparent Spinel Flat Window

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Transparent Ceramic

Catalog No.	CM4059
Material	Spinel (MgAl2O4)
Density	3.57-3.58 g/cm3
Size	<280mm Dia x <20mm T
Crystal System	Cubic

Transparent spinel (Magnesium aluminum transparent ceramics) has many applications in optics, electronics and structure. Stanford Advanced Materials (SAM) is a professional manufacturer of transparent ceramic products. We provide custom machined transparent ceramic products to exact customer specifications.

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Description

Specification

Video

Transparent Spinel Flat Window 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 Flat Window 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			℃	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 Flat Window Features:

Transparent Spinel Flat Window 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 Flat Window Applications:

- Optical Windows, lenses, prisms;

-Pressure vessel observation window, reaction equipment observation window, boiler water level gauge;

-Ceramic substrate materials for LED and electronic packaging.

Transparent Spinel Flat Window Packaging:

SAM’s Transparent Spinel Flat Window is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.

Transparent Spinel Flat Window FAQs

Q1: What is a Transparent Spinel Flat Window?

A transparent spinel flat window is a planar optical component made from magnesium aluminate spinel (MgAl₂O₄). This material is known for its exceptional optical clarity, hardness, and durability, making it suitable for a variety of applications requiring a clear, strong, and stable window.

Q2: How should Transparent Spinel Flat Windows 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.

Q3: What sizes and shapes are available for Transparent Spinel Flat Windows?

Transparent spinel flat windows are available in various sizes and thicknesses to meet different application needs. Custom sizes and shapes can also be manufactured to meet specific requirements.

Specification

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			℃	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