SmFeO_3的制备及其多波段兼容隐身性能研究

Preparation and multiple-band stealth properties of SmFeO_3

采用固相法制得了SmFeO3粉体。借助XRD、SEM对SmFeO3粉体的物相组成和形貌进行了表征。此外，测试了SmFeO3的微波电磁特性及其吸波性能、红外辐射率以及1．06um波长处的反射率性能。结果表明，当煅烧温度为1250℃时，可以制得单一相的SmFeO3粉体；该粉体宏观呈现橙红色，微观颗粒尺寸大小为2～4μm的不规则块状。当单层SmFeO3材料的厚度为2．0mm时，反射损耗在15．8GHz左右出现约为-10dB的峰值，同时在14．3～16．8GHz频率范围内反射损耗均达到一5dB。SmFeO3粉体在1．06μm波长处的反射率为0．31％，激光吸收性能强；红外辐射率为0．58，属于中低红外辐射率。

SmFeO3 powders were prepared by solid state reaction. The phase composition and surface appearance of the obtained SmFeO3 powders were characterized by XRD, and SEM, respectively. In addition, the micro-wave electromagnetic properties, the infrared emissivity and the reftectivity at 1. 06μm wavelength of SmFeOa powders were measured. The results showed that the pure SmFeO3 was formed when the calcining temperature was 1250℃, and the obtained SmFeO3 showed an orange-red color. Moreover, the particles exhibited irregular blocky shape, and the average size was about 2-4μm. For the single SmFeOamicrowave absorber, the maximum reflection loss （RL） was about -10dB at 15. 8GHz. The RL reached -5dB in the frequency range of 14.3- 16.8GHz. At the same time, the SmFeO3 particles not only had strong laser absorption with 0.41% reflectivity at 1.06μm wavelength but also had low infrared emissivity of 0. 66.