Optical property of SmAlO₃ applied as 1.06 渭m laser absorbing material

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• 作者：Yiqing ZHU ; Pengde HAN ; Le ZHANG ; Lixi WANG ; Qitu ZHANG
• 关键词：SmAlO3 ; laser absorption ; heat resistant ; sol-gel combustion method ; rare earths
• 刊名：Journal of Rare Earths
• 出版年：November, 2013
• 年：2013
• 卷：31
• 期：11
• 页码：1102-1105
• 全文大小：1250 K

文摘

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 渭m could be obtained at 900 掳C for 2 h. Furthermore, the reflectivity of SmAlO₃ at various temperatures from 鈭?0 to 500 掳C transformed within 卤0.1%, and all maintained below 1% at 1.06 渭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 渭m laser defense, which could be further applied to laser absorbing coatings with a wide range of temperatures.