Material     ZnSe coating material

1¡¢Formula: ZnSe
2¡¢Molecular weight: 144.33
3¡¢Appearance: yellow block or granule
4¡¢Density: 5.3 g/cm3
5¡¢Melting point: 1526 ¡æ
6¡¢Linear expansion coefficient: 7.45¡Á10-6
7¡¢Specific heat: 1 Pa ¡« 10 Pa
8¡¢Hardness (acc. To Knoop): 120 kg/mm2
9¡¢Solubility: soluble in water
10¡¢Properties of the thin film
        Transmission range 600 ¡« 20000nm
        Refractive index at 550nm: 2.58
        at 1000nm: 2.48
        at 10500nm: 2.4
11¡¢Hints on evaporation
        Evaporating with molybdenum.
        Evaporation temperature: 900 ¡æ