APPLICATIONS:Visible. IR. Laser windows. FLlR (Forward looking IR) systems.
Optical Properties
| Transmission Range | 0.5 to 22 microns for > 10% uncoated 6mm |
|---|---|
| Refractive Index | 2.4028 at 10.6 microns |
| Reflection Loss | 29% at 10.6 microns (2 surfaces) |
| Restrahelen Peak | |
| dN/dT | 61 x 10-SJK at 10.6 microns 298K |
Physical Properties
| Density | 5.27gm/cc |
|---|---|
| Melting Point | 1525°C |
| Thermal Conductivity | 18 Wm-1° K -1 at 250°C |
| Thermal Expansion | 7.8 x 10-6/K |
| Hardness | Knoop 120 50gm indenter |
| Specific Heat Capacity | 339.1JKgm-l K -1 at 25°C |
| Dielectric Constant |
|
| Young's Modulus (E) | 67.22 Gpa |
| Shear Modulus (G) | |
| Bulk Modulus (K) | |
| Elastic Coeffcients | |
| Apparent Elastic Limit | ~55 Mpa using 4-point test |
| Poisson Ratio | 0.28 |
Chemical Properties
| Solubility | Insoluble |
|---|---|
| Molecular Weight | 144.33 |
| Class/Structure | Polycrystalline Cubic |
Index of Refraction
| 1.00 microns | 2.4892 |
|---|---|
| 3.00 microns | 2.4376 |
| 5.00 microns | 2.4295 |
| 7.00 microns | 2.4218 |
| 10.60 microns | 2.4028 |
| 13.00 microns | 2.3850 |
| 15.00 microns | 2.3665 |
| 15.80 microns | 2.3579 |
| 17.00 microns | 2.3438 |
| 18.20 microns | 2.3278 |
