基本特性 |
Structure | Wurtzite (Hexagonal) |
Density | 5.81 g/ cm3 |
Young’s Modulus | 5×1011 dyne/cm2 |
Coef. of Thermal Expansion (500 K) | α 1=6.26×10-6/K; α 3=4.28×10-6/K |
Specific Heat | 0.49 J/gK |
Thermal conductivity (at 25 °C) | 0.04 W/cmK |
Max. Transmittance (λ =2.5-15 μm) | ≥ 71 % |
Absorption Coef. (λ =10.6 μm) | ≤ 0.0015 cm-1 (including 2 surfaces) |
Refractive index (λ =10.6 μm) | no= 2.4258, ne=2.4437 |
Max. single crystal diameter/length | Ø50.8×40 mm |
Max. IR optic blank diameter/length | Ø50×50 mm or plate 60×60×6 mm |
Surface quality | As-cut, 60/40 scratch*dig per MIL-0-13830 |