الوصف

ZnS grown by chemical vapor desposition (CVD) often used in the 8 to *2 microns region. Its high resistance to rain erosion and high-speed dust and particulate abrasion makes it particularly suitable for exterior IR windows on aircraft frames. 



Optical Properties



Bulk Absorption Coefficient When *0.6µm <= 0.*4 cm*1 

Temperature Change of Refractive Index When *0.6µm *1 x ***6/°C 

Refractive Index Inhomogeneity When *0.6µm < **0 x ***6 



Thermal Properties



Thermal Conductivity when *0° C 0.**7 W/cm/°C 

Specific Heat 0.**9 J/g/°C 

Linear Expansion Coefficient When *0° C 6.8 x***6/°C 



Mechanical Properties



Youngs Modulus *4.5 GPa (*0.8 x **6 psi) 

Rupture Modulus **3.4 MPa (*5,**0 psi) 

Knoop Hardness ******0 kg/mm2 

Density 4.*8 g/cm3 

Poissons Ratio 0.*7