Laser stealth absorbent of samarium oxysulfide prepared by flux method

A novel 1064 nm laser stealth absorbent of Sm2O ₂S was prepared by flux method. The effects of different calcining temperatures and fluxes on the reflective property of Sm ₂O ₂S were investigated. The phase composition, morphology, and reflectivity of the powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and ultraviolet-visible spectrophotometer (UVPC). The results showed that pure phase of Sm ₂O ₂S could be obtained with Na ₂CO ₃ as flux above 950°C, and the reflectivity decreased with the calcination temperature increasing. Compared with other samarium compounds, the reflectivity at 1064 nm of Sm ₂O ₂S was the lowest. Different fluxes had great impact on the phase composition, particle morphology, and reflectivity of the products. In short, Sm ₂O ₂S was suitable as a kind of absorbent against 1064 nm laser.