| NaCl晶體 |
|
 |
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| OPTICAL |
|
| |
Transmission Range |
0.2 to 15 microns |
| |
Refractive Index |
1.49065 at 11 microns |
| |
Reflection Loss |
7.6% at 10.6 µm (2 surfaces) |
| |
Index of Absorption |
1.64 x 10-4 cm-1 at 2.7µm |
| |
Restrahlen Peak |
50.1 microns |
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dN/dT |
-40.83 X 10-6/°C |
| |
|
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| PHYSICAL |
|
| |
Density |
2.17 g/cm3 |
| |
Melting Point |
801°C |
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Thermal Conductivity |
1.15Wm-1K-1 at 273K |
| |
Thermal Expansion |
44 X 10-6/K |
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Hardness |
Knoop 18.2 in <100> with 200g indenter |
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Specific Heat Capacity |
854 J Kgm-1K-1 |
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Dielectric Constant |
5.9 at 1MHz |
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Young's Modulus (E) |
39.98 GPa |
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Shear Modulus (G) |
12.61 GPa |
| |
Bulk Modulus (K) |
24.42 GPa |
| |
Elastic Coefficients |
C11 = 48.5 C12 = 12.3 C44 = 12.61 |
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Apparent Elastic Limit |
2.4 MPa (350 psi) |
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Poisson Ratio |
0.252 |
| CHEMICAL |
|
| |
Solubility |
35.7g/100g water at 273K |
| |
Molecular Weight |
58.45 |
| |
Class/Structure |
Cubic FCC, NaCl, Fm3m, (100) cleavage | | |
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