Preparation and infrared emissivity of Bi₂O₃/ATO mixed burning filler

Bi₂O₃/ATO powders were prepared by solid state reaction. The phase composition, reflectivity in visible region, morphology, elemental composition, infrared transmittance and infrared emissivity of the obtained Bi₂O₃/ATO powders were characterized by XRD, ultraviolet-visible spectrophotometer, SEM, EDS, FT-IR and infrared emissivity analyzer, respectively. The results showed that the obtained Bi₂O₃/ATO powders possessed excellent infrared transparency. Moreover, infrared emissivity decreased first and then increased with the increase of the Bi₂O₃ contents, and infrared emissivity reached the minimum 0.67 when the content of Bi₂O₃ was 70wt%. In addition, the colors could be adjusted by changing the content of Bi₂O₃. Bi₂O₃/ATO powders were suitable for preparing the multicoloured infrared camouflage packing.