Бромид Серебра AgBr
МакроОптика produces mirrors, lenses, windows, prisms, wedges and others optical components according to customers’ specifications and drawings out of crystal silver bromide AgBr.
Silver Bromide is useful material for very deep IR applications where sensitivity to moisture is a problem. Silver Bromide crystal growth was developed relatively recently by the standards of many IR materials. The parameters of Silver Bromide have not been researched as thoroughly as those of Silver Chloride. This soft crystal deforms under heat and pressure and can be forged in polished dies to create IR windows and lenses.
Silver Bromide is grown in small ingots by sealed ampoule Stockbarger techniques. Silver Bromide is malleable and deep yellow, it darkens in sunlight, but less readiliy than Silver Chloride.
|Transmission Range||0.45 to 35 μm (1)|
|Refractive Index||2.167 at 10 μm (1)(2)|
|Reflection Loss||23.9% at 10 μm (2 surfaces)|
|Absorption Coefficient||Not known|
|Reststrahlen Peak||112.7 μm|
|dn/dμ = 0||Not known|
|Melting Point||432 °C|
|Thermal Conductivity||1.21 W m-1 K-1 at 273 K|
|Thermal Expansion||30 x 10-6/°C at 273 K|
|Specific Heat Capacity||292 J Kg-1 K-1|
|Dielectric Constant||13.1 at 1MHz (2)|
|Youngs Modulus (E)||31.97 GPa|
|Shear Modulus (G)||Not Known|
|Bulk Modulus (K)||44.03 GPa|
|Elastic Coefficients||C11=56.3 C12=32.3 C44=7.25|
|Apparent Elastic Limit||26.2 MPa|
|Poisson Ratio||Not Known|
|Solubility||12 x 10-6g/100g water at 20°C|
|Class/Structure||Cubic FCC, NaCl, Fm3m, No cleavage, cold flows|
No = Ordinary Ray