ZnS
ZnS is a chemically inert material with high purity, insoluble in water, moderate density and easy processing. It is widely used in the fabrication of infrared windows, fairings and infrared optical elements. Like ZnSe, ZnS MS is also a material with good refractive index uniformity and consistency, and has good image transmission performance. The material also has a high transmittance in the mid infrared band. Compared with ZnSe, ZnS MS has high hardness, high breaking strength and strong resistance to harsh environments.
features
| Capability Parameter | |
| Physical Properties | |
| Crystal structure | Cubium |
| Density | 4.09g/cm³ |
| Crystal size | 20-100 μm |
| Doped | None>0.2mm |
| Resistivity | >10¹²ohm-cm |
| Dielectric constant | Consulting technical personnel |
| Optical Properties | |
| Bulk Absorption Coefficient@10.6μm | <0.20cm-1 |
| Thermo-optical coeffecient(dn/dT)@0.6328μm | 5.4 x 10-5/°C |
| Refractive Index Inhomogeneity@0.6328μm | <20 x 10-6 |
| Forward Scatter@0.6328μm | ≤6%/cm |
| Thermal Properties | |
| Heat conductivity@ 20°C | 0.27 W/cm/°C |
| Specific heat capacity | 0.527 J/g/°C |
| Linear expansion coefficient@ 20°C | 6.5 x10-6/°C |
| Mechanical Properties | |
| Young's modulus | 85.5 GPa (12.4 x 106psi) |
| Rupture Modulus | 68.9 MPa (10,000 psi) |
| Hardness(Knoop) | 150-160 kg/mm² |
| Density | 4.09 g/cm³ |
| Poisson's ratio | 0.27 |
| Fracture toughness | 1.0 x 106N/m3/2 |
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