Energy conversion and ignition of iron nanoparticles by flash

被引：11
作者：
Liu, YanXiong [1 ,2 ]
Liu, Dong [1 ,2 ]
Liu, GuanNan [1 ,2 ]
机构：
[1] Nanjing Univ Sci & Technol, Sch Energy & Power Engn, MIIT Key Lab Thermal Control Elect Equipment, Nanjing 210094, Jiangsu, Peoples R China
[2] Nanjing Univ Sci & Technol, Sch Energy & Power Engn, Adv Combust Lab, Nanjing 210094, Jiangsu, Peoples R China
来源：
SCIENCE CHINA-TECHNOLOGICAL SCIENCES | 2017年 / 60卷 / 12期
基金：
中国国家自然科学基金;
关键词：
flash ignition; Fe nanoparticles; minimum ignition energy; WALLED CARBON NANOTUBES; PARTICLE-COMBUSTION; POROUS SILICON; OXIDATION; FUELS; LIGHT;
D O I：
10.1007/s11431-017-9144-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present study, Fe nanoparticles (NPs) can ignite when exposed to a conventional camera flash. The ignition process of Fe NPs was composed of the initial ignition stage with the maximum temperature level of 2000 K and the burning stage with temperature level of 800 K. The microstructure characterization indicated Fe NPs were oxidized to Fe2O3 via the exposure-melt mechanism. It was found that more particle numbers per unit area can lead to lower minimum ignition energy which may be caused by the enhancement light energy absorption. The light energy absorbed from the flash was influenced by wavelengths but the conversion of Fe was only related to the packing mass.
引用
收藏
页码：1878 / 1884
页数：7
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