MgO (Magnesium Oxide) Transparent Ceramic
Keywords:
Scintillation Crystals
- Product Introduction
- Key advantages
- Application areas
- Product Features
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- Commodity name: MgO (Magnesium Oxide) Transparent Ceramic
MgO (Magnesium Oxide) transparent ceramic exhibits a transparent appearance. They belong to the cubic crystal system and have a melting point of 2800°C.
Product Introduction
MgO (Magnesium Oxide) transparent ceramic exhibits a transparent appearance. They belong to the cubic crystal system and have a melting point of 2800°C. Made from high-purity MgO as the raw material, these ceramics are enhanced with small amounts of grain growth inhibitors and produced via either hot-pressing or conventional pressure sintering processes. They boast a flexural strength of 134 MPa, along with excellent transparency and outstanding infrared transmittance. As an optically isotropic material, MgO ceramics also demonstrate superior resistance to alkali metal vapor corrosion, coupled with a high melting point, exceptional thermal conductivity, relatively low theoretical density, and impressive electrical insulation properties—plus remarkable infrared transparency. Due to these exceptional characteristics, MgO ceramics find extensive applications in both visible-light and infrared-optical materials, outperforming alumina ceramics in many key performance areas, making them a highly promising material for future use.
Transparent magnesium oxide ceramics can be used as infrared windows and plasma shields for rockets, missiles, and spacecraft, as well as substrates for optical filters and optical detectors, high-pressure sodium lamp bulbs, and high-temperature furnace windows, among other applications.
Key Advantages
- Excellent transparency and infrared light transmittance
- Resistance to alkali metal vapor corrosion
- High melting point, high thermal conductivity
- Lower theoretical density, high insulationApplication Areas
- Manufacturing infrared windows and fairings for spacecraft, rockets, and missiles
- High-temperature furnace infrared windows, high-temperature infrared optical devices
- Optical filters and optical detectors
- Key materials for high-pressure sodium lamp tubes and infrared detector housingsProduct Features
Material Properties
Crystal Structure
Cubic
Dielectric Constant
9.65 (1 kHz–1 MHz)
Density
3.58 g/cm³
Mohs Hardness
6.8 Mohs
Transmittance
>90% @ (200–1000 nm)
Lattice Constant
4.130Å
Purity
99.95%
Flexural Strength
134 MPa
Refractive Index
1.736
Thermal Expansion Coefficient
11.2x10-6(/°C)
Thermal Conductivity
36 W/m-K at 300 K
Melting Point
2800°C
Product Processing Indicators
Effective Aperture
>90%
Dimensions
Customized to Customer Specifications
Diameter Tolerance
+0/-0.05 mm
Length Tolerance
±0.1 mm
Chamfer
≤0.3×45°
Surface Quality
40-20 S-D
Flatness
≤λ/6@632.8 nm
Parallelism
<20"
Perpendicularity
≤15′
Chipped Edge
<0.1 mm
Coating
Customized to Customer Specifications
-
- Excellent transparency and infrared light transmittance
- Resistance to alkali metal vapor corrosion
- High melting point, high thermal conductivity
- Lower theoretical density, high insulation -
- Manufacturing infrared windows and fairings for spacecraft, rockets, and missiles,
- High-temperature furnace infrared windows, high-temperature infrared optical devices
- Optical filters and optical detectors
- Key materials for high-pressure sodium lamp tubes and infrared detector housings -
Material Properties Crystal structure Cubic Dielectric constant (1 kHz – 1 MHz) 9.65 Density 3.58g/cm3 Hardness 6.8 (Mohs) Optical transmission >90% @ (200–1000 nm) Lattice constant (Å) 4.130 Å Purity 99.95% Flexural Strength (MPa) 134MPa Refractive index 1.736 Coefficient of thermal expansion 11.2 × 10⁻⁶ (/°C) Thermal conductivity (W/m-K) 36 W/m-K at 300 K Melting point 2800°C Product Processing Metrics Effective Aperture >90% Dimensions Customized to customer specifications Diameter Tolerance +0 / -0.05 mm Length Tolerance ±0.1 mm Protective Chamfer ≤0.3 × 45° Surface finish 40-20 S-D Flatness ≤λ/6 @ 632.8 nm Parallelism <20" Verticality ≤15′ Chipped edge <0.1 mm Coating Customized to customer specifications
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