CAJ | 학술논문

通过拟合温度得到了纳米铝粉在环氧丙炳快速反应中的反应率,结果表明:先前的理论模型不适用纳米铝粉的低点火温度原因的解释.在爆炸激波管内采集到了纳米铝粉多隙氧化物的辐射谱,通过对所得光谱的拟合,得出其反应温度约为3100K,误差不足100K.由于在谱的背景上,同时观察到了Al和AlO的线,AlO的谱强度随入射激波传播速度增大而加强.反应致密产物的辐射比相同温度下钨带灯的辐射要强.
통과의합온도득도료납미려분재배양병병쾌속반응중적반응솔,결과표명:선전적이론모형불괄용납미려분적저점화온도원인적해석.재폭작격파관내채집도료납미려분다극양화물적복사보,통과대소득광보적의합,득출기반응온도약위3100K,오차불족100K.유우재보적배경상,동시관찰도료Al화AlO적선,AlO적보강도수입사격파전파속도증대이가강.반응치밀산물적복사비상동온도하오대등적복사요강.
The reacting rate is determined with fitting temperature,but the result shows that the previous theoretical models for bulk aluminum failure to describe the reactants in nano-scale regime. Time-resolved emission experiments on deflagrating metastable interstitial composites of nano-aluminum trioxide are formed in the detonation shock tube. Early in the experiment, the temperature obtained by fitting to a Planckian gray body appears accurate to be better than ± 100K(at 3100K). Spectral features due to Al and AlO species are observed in an apparent thermal background.The intensity of the AlO emission is observed to change with larger AlO intensities associated with faster shock wave propagation speeds. Absolute irradiance output from the compressed powder samples is found to exceed that from a tungsten filament at the same apparent temperature.