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Hot-Pressed Polycrystalline Magnesium Fluoride (HP MgF2)
HP MgF2 owns better mechanical, thermal properties and chemical stability
than single crystal, and possesses good infrared transmittance.
Main Properties:
Transmissive
Wavelength: 0.7¡«9 ¦Ìm
Knoop Hardness: ¡Ý 539kg/mm2
Fracture Strength: 96 MPa
Compression Strength: £¾ 300MPa
Bending Strength: £¾70MPa
Density: ¡Ý3.17 g/cm3
Thermal Expansion Coefficient: ¡Ü1.3¡Á10-5 K-1
(25¡«300 ¡æ)
Refractive Index: 1.3812 ¡À 0.005 (¦Ë= 0.5893 ¦Ìm)
Transmittance: £¾85% (2¡«7.5¦Ìm)
Specifications:
Dome: less than §¶ 270mm ¡Á 10mm
Plates: less than §¶ 360mm ¡Á 15mm |
Hot-Pressed Polycrystalline Zinc Sulphide (HP ZnS)
HP ZnS possesses good infrared optical transmission and thermal property and
impact overloading resistant.
| Main properties
Density: ¡Ý 4.09g/cm3
Transmissive wavelength: 1¡«12 ¦Ìm
Bending strength: £¾ 120MPa
Knoop hardness: 300 kg/mm2
Transmittance: £¾ 70% (8¡«10¦Ìm)
Specifications
Dome: Less than §¶ 270mm ¡Á 10mm
Plates: Less than §¶ 360mm ¡Á 15mm
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