Journal
JOURNAL OF RARE EARTHS
Volume 31, Issue 11, Pages 1102-1105Publisher
ELSEVIER
DOI: 10.1016/S1002-0721(12)60411-6
Keywords
SmAlO3; laser absorption; heat resistant; sol-gel combustion method; rare earths
Categories
Funding
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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SmAlO3 powders were successfully synthesized through the citrate sol-gel combustion method. The phase evolution of the prepared powders were characterized using thermal gravimetric (TG) analysis, differential scanning calorimetry (DSC) analysis and Fourier transform infrared spectroscopy (FTIR). X-ray diffraction (XRD) was applied to examine the purity of the powders. The reflective properties of SmAlO3 with changing temperatures were investigated by ultraviolet-visible near-infrared spectrophotometer (UVPC) specular reflection spectrum. The results displayed that pure SmAlO3 phase with preferable reflectivity at 1.06 mu m could be obtained at 900 degrees C for 2 h. Furthermore, the reflectivity of SmAlO3 at various temperatures from -40 to 500 degrees C transformed within +/-0.1%, and all maintained below 1% at 1.06 mu m. The absorbance of SmAlO3 in the resin solution was 2.134 and the moral absorption coefficient was about 384.8 in the work. The study indicated that SmAlO3 powders may be a promising kind of heat resistant absorbing material for 1.06 mu m laser defense, which could be further applied to laser absorbing coatings with a wide range of temperatures.
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