TY  - JOUR
AU  - LI, Senlin
AU  - LUO, Ting
AU  - XIA, Guanghua
AU  - WANG, Jianchun
AU  - FANG, Yijin
PY  - 2023
TI  - Dual-band Infrared Radiation Performance of Spinel-type Fe2O3-CuO-MnO2 Ceramic Powder at Room Temperature
JO  - Journal of Ceramics
SN  - 2095-784X
SP  - 951
EP  - 957
VL  - 44
IS  - 5
AB  - The effect of molar ratio and dopant on two-band infrared radiation performance of Fe2O3-CuO-MnO2 transition metal oxide materials were studied. Infrared emissivities of the materials at 3–5 μm and 8–14 μm bands were detected by using IRE-2 dual-band emissivity instrument at room temperature. UV-VIS absorption spectra of the materials were studied by using ultraviolet-visible spectrophotometer. Subsequently, width of the forbidden gap was calculated by using the Tauc plot method. The phase evolution and microstructure were analyzed by using XRD and SEM-EDS. It is found that the emissivity of the Fe2O3-CuO-MnO2 spinel infrared materials at 8–14 μm band is much higher than that in 3–5 μm band. Lattice distortion of the spinel crystals was observed and the width of forbidden gap was decreased with increasing content of Fe2O3. The presence of Cr2O3 and rare earth oxides Eu2O3 and Y2O3 is beneficial for improving the infrared emissivity in 3–5 μm band. The width of forbidden band is obviously reduced and the optimal infrared radiation in 3–5 μm band was obtained when Y2O3 was introduced, where the value of emissivity was increased by 22.3% to 0.890. Furthermore, Cr2O3 played a stronger role in improving the infrared radiation in 8–14 μm band, while the emissivity was increased from 0.909 to 0.956.
UR  - https://doi.org/10.13957/j.cnki.tcxb.2023.05.012
DO  - 10.13957/j.cnki.tcxb.2023.05.012