| Autor: |
Shi Li, Tao Guo, Miao Yao, Wen Ding, Jialin Chen, Jiaxing Song, Sheng Zhang, Rui Zhu |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Materials Research Express, Vol 8, Iss 3, p 035507 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2053-1591 |
| DOI: |
10.1088/2053-1591/abed10 |
| Popis: |
To study the effect of the addition of potassium perchlorate (KClO _4 ) on the performance of nano thermites, Al/Bi _2 O _3 nano thermites with different mass fraction (wt%) of KClO _4 was made by ultrasonic dispersion method. Then, all samples were tested by SEM, DSC and rapid excitation ignition. DSC results showed Al/Bi _2 O _3 /10 wt%KClO _4 had the highest heat release. Compared with Al/Bi _2 O _3 , the heat release increased by 28.32%. The results of activation energy calculations showed Al/Bi _2 O _3 /30 wt%KClO _4 had the lowest activation energy (Ea). Its activation energy was reduced by 30%, mere about 149.17 KJ mol ^−1 . Finally, it can be seen from the combustion situation that the addition of KClO _4 reduced the intensity of burning. This work found a way to increase the heat release or reduce the activation energy of nano thermites by controlling the amount of KClO _4 added. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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