产 品 说 明
| OPTICAL | ||
| Transmission Range | 0.17 to 5.5 microns | |
| Refractive Index | 1.75449 (o) 1.74663 (e) at 1.06 microns | |
| Reflection Loss | at 1.06 µm (2 surfaces) for o-ray – 11.7%; for e-ray – 14.2% | |
| Index of Absorption | 0.3 x 10-3 cm-1 at 2.4µm | |
| Restrahlen Peak | 13.5µm | |
| dN/dT | 13.7 x 10-6 at 5.4µm | |
| dN/dµ = 0 | 1.5µm | |
| PHYSICAL | ||
| Density | 3.97 g/cm3 | |
| Melting Point | 2040°C | |
| Thermal Conductivity | 27.21 W/(m? K) at 300K | |
| Thermal Expansion | 5.6 (paral) & 5.0 (perp) x 10-6/K | |
| Hardness | Knoop 2000 with 2000g indenter | |
| Specific Heat Capacity | 419 J/(kg? K) | |
| Dielectric Constant | 11.5 (paral) 9.4 (perp) at 1MHz | |
| Young's Modulus (E) | 335 GPa | |
| Shear Modulus (G) | 148.1 GPa | |
| Bulk Modulus (K) | 240 GPa | |
| Elastic Coefficients | C11=496 C12=164 C13=115 C33=498 C44=148 | |
| Apparent Elastic Limit | 275 MPa (40,000 psi) | |
| Poisson Ratio | 0.25 | |
| CHEMICAL | ||
| Solubility | 98? 10-6 g/100g water | |
| Molecular Weight | 101.96 | |
| Class/Structure | Trigonal (hex), R3c | |