摘要
采用共沉淀法将Cr_2O_3包覆于片状金属铝粉表面制得A1/Cr_2O_3复合粒子.借助于TG-DSC、XRD、SEM等测试手段系统研究了反应时间和煅烧温度分别对复合粒子的物相组成、包覆前后形貌的影响.此外,探讨了不同铝粉添加量下Al/Cr_2O_3粉末的红外辐射率和1.06μm波长处的反射率性能.结果表明:当反应时间为2h、煅烧温度为400℃、铝粉添加量为50wt%时制得的Al/Cr_2O_3复合粒子包覆较为完整,其外观呈墨绿色,红外辐射率值为0.66,1.06μm波长处的反射率为0.41%,具有良好的红外-激光-可见光兼容隐身性能.
Al/Cr2O3 composite particles were prepared by co-precipitation method. Effects of reaction time and calcination temperature on phase composition and morphology were studied by TG-DSC, XRD and SEM. In addition, the infrared emissivity and the reflectivity of Al/Cr2O3 powders with different aluminum contents at the wavelength of 1.06 μm were also discussed. The results show that the Al/Cr2O3 composite particles with 50wt% aluminum is well coated after reacted for 2h and calcined at 400℃. The optimized Al/Cr2O3 composite particles exhibit dark green appearance for visible light stealth, low emissivity of 0.66 for infrared stealth and low reflectivity of 0.41% for strong laser absorption at the wavelength of 1.06 μm.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2010年第12期1298-1302,共5页
Journal of Inorganic Materials
基金
国家部委科技资助项目(JPPT-1251)~~
关键词
Al/Cr2O3复合粒子
共沉淀法
复合隐身性能
Al/Cr2O3 composite particles
co-precipitation method
compound stealthy properties
