固体火箭技术2011，Vol.34Issue(5)：628-631,4.
纳米铝粉热反应特性的TG-DSC研究
Investigation on nano-aluminum thermal reactivity by TG-DSC
摘要
Abstract
The thermal reactivity of 85 nm-A1 was characterized by TG-DSC,and was compared to the reactivity of micron-A1 powders. The results show that the thermal reactivity of aluminum has obvious size effect. Nano-A1 gain weight quickly at about 517% , and ranging from 500 % to 660℃,the mass increase about 20.4% ,with releasing heat of about 4 909 J/g. While micron-A1 only gain weight a little at about 600%. And the larger the particle size was,the less the weight increased. The aluminum particle of 4 ~6,9 - 10 and 16-20 μm gain weight 2.02%、1.03% ,0.89% respectively. In addition,the heating rate has little influence on nano-aluminum' s weight gain before the melting point. The weight increase about 22.8% ~ 24.7% at the four heating rates, releasing heat(4850 ±350) J/g. However,the heating rate affects oxidation rate much more. With the increase of the heating rate, the initial oxidation temperature range shrinks sharply and the oxidation rate increases notably. The temperature range between the initial oxidation temperature and the peak temperature from DSC( Tp- Ton)changes from 40 K to 2 K,and the maximum oxidation rate vox varies from 0.019 mg/s to 0.55 mg/s.关键词
纳米铝粉/热反应特性/升温速率Key words
nano-aluminum/thermal reactivity/heating rate分类
航空航天引用本文复制引用
何丽蓉,肖乐勤,菅晓霞,周伟良..纳米铝粉热反应特性的TG-DSC研究[J].固体火箭技术,2011,34(5):628-631,4.基金项目
总装重点预研基金项目(9140A28020308 BQ0207). （9140A28020308 BQ0207）
