| CaF2晶体 |
|
 |
|
| OPTICAL |
|
| |
Transmission Range |
0.13 to 10 microns |
| |
Refractive Index |
1.39908 at 5 microns |
| |
Reflection Loss |
5.5% at 5 µm (2 surfaces) |
| |
Restrahlen Peak |
35 microns |
| |
dN/dT |
-10.6 x 10-6/°C |
| PHYSICAL |
|
| |
Density |
3.18 g/cm3 |
| |
Melting Point |
1360 °C |
| |
Thermal Conductivity |
9.71 W/(m*K) |
| |
Thermal Expansion |
18.85 x 10-6/°C |
| |
Hardness |
Knoop 158.3 kg/mm2 (100) |
| |
Specific Heat Capacity |
854J/(kg K) |
| |
Dielectric Constant |
6.76 at 1MHz |
| |
Young's Modulus (E) |
75.8 GPa |
| |
Shear Modulus (G) |
33.77 GPa |
| |
Bulk Modulus (K) |
82.71 GPa |
| |
Elastic Coefficients |
C11=164 MPa, C12=53 MPa, C44=33.7 MPa |
| |
Apparent Elastic Limit |
36.54 MPa |
| |
Poisson Ratio |
0.26 |
| CHEMICAL |
|
| |
Solubility |
0.0017g/100g water at 20 °C |
| |
Molecular Weight |
78.08 |
| |
Class/Structure |
Cubic (111) cleavage | | |
|
