Comparative investigations of ternary thermite Al/Fe2O3/CuO and Al/Fe2O3/Bi2O3 from pyrolytic, kinetics and combustion behaviors
To develop new energy enhancement energetic materials with great combustion performance and thermal stability, two kinds of ternary thermite, Al/Fe2O3/CuO and Al/Fe2O3/Bi2O3, were prepared and analyzed via mechanical ball milling. The samples were characterized by SEM, XRD, TG-DSC, constant volume a...
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KeAi Communications Co., Ltd.
2023-08-01
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| Series: | Defence Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214914722001179 |
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| author | Shi Li Jia-lin Chen Tao Guo Wen Ding Lin Jiang Miao Yao Jia-xing Song Li-feng Xie Yi-ming Mao |
| author_facet | Shi Li Jia-lin Chen Tao Guo Wen Ding Lin Jiang Miao Yao Jia-xing Song Li-feng Xie Yi-ming Mao |
| author_sort | Shi Li |
| collection | DOAJ |
| description | To develop new energy enhancement energetic materials with great combustion performance and thermal stability, two kinds of ternary thermite, Al/Fe2O3/CuO and Al/Fe2O3/Bi2O3, were prepared and analyzed via mechanical ball milling. The samples were characterized by SEM, XRD, TG-DSC, constant volume and constant pressure combustion experiments. The first exothermic peaks of Al/Fe2O3/CuO and Al/Fe2O3/Bi2O3 appear at 579 °C and 564.5 °C, respectively. The corresponding activation energies are similar. The corresponding mechanism functions are set as G(α)=[−ln(1−α)]3/4 and G(α)=[−ln(1−α)]2/3, respectively, which belong to the Avrami-Erofeev equation. Al/Fe2O3/CuO has better thermal safety. For small dose samples, its critical temperature of thermal explosion is 121.05 °C higher than that of Al/Fe2O3/Bi2O3. During combustion, the flame of Al/Fe2O3/CuO is spherical, and the main products are FeAl2O4 and Cu. The flame of Al/Fe2O3/Bi2O3 is jet-like, and the main products are Al2O3, Bi and Fe. Al/Fe2O3/Bi2O3 has better ignition and gas production performance. Its average ignition energy is 4.2 J lower than that of Al/Fe2O3/CuO. Its average step-up rate is 28.29 MPa/s, which is much higher than 6.84 MPa/s of Al/Fe2O3/CuO. This paper provides a reference for studying the thermal safety and combustion performance of ternary thermite. |
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| issn | 2214-9147 |
| language | English |
| last_indexed | 2024-03-12T11:53:40Z |
| publishDate | 2023-08-01 |
| publisher | KeAi Communications Co., Ltd. |
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| series | Defence Technology |
| spelling | doaj.art-5cf858d7fce34ae19408b5b01beff5362023-08-31T05:02:51ZengKeAi Communications Co., Ltd.Defence Technology2214-91472023-08-0126180190Comparative investigations of ternary thermite Al/Fe2O3/CuO and Al/Fe2O3/Bi2O3 from pyrolytic, kinetics and combustion behaviorsShi Li0Jia-lin Chen1Tao Guo2Wen Ding3Lin Jiang4Miao Yao5Jia-xing Song6Li-feng Xie7Yi-ming Mao8College of Field Engineering, Army Engineering University of PLA, Nanjing, 210007, ChinaCollege of Field Engineering, Army Engineering University of PLA, Nanjing, 210007, ChinaCollege of Field Engineering, Army Engineering University of PLA, Nanjing, 210007, China; Corresponding author.College of Field Engineering, Army Engineering University of PLA, Nanjing, 210007, ChinaSchool of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, ChinaCollege of Field Engineering, Army Engineering University of PLA, Nanjing, 210007, ChinaXi'an Rare Metal Materials Research Institute Co., Ltd., Xi'an, 710016, ChinaSchool of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, ChinaCollege of Field Engineering, Army Engineering University of PLA, Nanjing, 210007, ChinaTo develop new energy enhancement energetic materials with great combustion performance and thermal stability, two kinds of ternary thermite, Al/Fe2O3/CuO and Al/Fe2O3/Bi2O3, were prepared and analyzed via mechanical ball milling. The samples were characterized by SEM, XRD, TG-DSC, constant volume and constant pressure combustion experiments. The first exothermic peaks of Al/Fe2O3/CuO and Al/Fe2O3/Bi2O3 appear at 579 °C and 564.5 °C, respectively. The corresponding activation energies are similar. The corresponding mechanism functions are set as G(α)=[−ln(1−α)]3/4 and G(α)=[−ln(1−α)]2/3, respectively, which belong to the Avrami-Erofeev equation. Al/Fe2O3/CuO has better thermal safety. For small dose samples, its critical temperature of thermal explosion is 121.05 °C higher than that of Al/Fe2O3/Bi2O3. During combustion, the flame of Al/Fe2O3/CuO is spherical, and the main products are FeAl2O4 and Cu. The flame of Al/Fe2O3/Bi2O3 is jet-like, and the main products are Al2O3, Bi and Fe. Al/Fe2O3/Bi2O3 has better ignition and gas production performance. Its average ignition energy is 4.2 J lower than that of Al/Fe2O3/CuO. Its average step-up rate is 28.29 MPa/s, which is much higher than 6.84 MPa/s of Al/Fe2O3/CuO. This paper provides a reference for studying the thermal safety and combustion performance of ternary thermite.http://www.sciencedirect.com/science/article/pii/S2214914722001179Ternary thermiteThermal kineticsReaction mechanismCombustion |
| spellingShingle | Shi Li Jia-lin Chen Tao Guo Wen Ding Lin Jiang Miao Yao Jia-xing Song Li-feng Xie Yi-ming Mao Comparative investigations of ternary thermite Al/Fe2O3/CuO and Al/Fe2O3/Bi2O3 from pyrolytic, kinetics and combustion behaviors Defence Technology Ternary thermite Thermal kinetics Reaction mechanism Combustion |
| title | Comparative investigations of ternary thermite Al/Fe2O3/CuO and Al/Fe2O3/Bi2O3 from pyrolytic, kinetics and combustion behaviors |
| title_full | Comparative investigations of ternary thermite Al/Fe2O3/CuO and Al/Fe2O3/Bi2O3 from pyrolytic, kinetics and combustion behaviors |
| title_fullStr | Comparative investigations of ternary thermite Al/Fe2O3/CuO and Al/Fe2O3/Bi2O3 from pyrolytic, kinetics and combustion behaviors |
| title_full_unstemmed | Comparative investigations of ternary thermite Al/Fe2O3/CuO and Al/Fe2O3/Bi2O3 from pyrolytic, kinetics and combustion behaviors |
| title_short | Comparative investigations of ternary thermite Al/Fe2O3/CuO and Al/Fe2O3/Bi2O3 from pyrolytic, kinetics and combustion behaviors |
| title_sort | comparative investigations of ternary thermite al fe2o3 cuo and al fe2o3 bi2o3 from pyrolytic kinetics and combustion behaviors |
| topic | Ternary thermite Thermal kinetics Reaction mechanism Combustion |
| url | http://www.sciencedirect.com/science/article/pii/S2214914722001179 |
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