Effects of oxidizer structure on thermal and combustion behavior of Fe2O3/Zr thermite
Performance of MOF-derived micrometer porous Fe _2 O _3 as the oxidizer in Zr-fuelled thermite is compared with commercial nano-sized Fe _2 O _3 by characterizing thermal and combustion behavior of Fe _2 O _3 /Zr mixture via differential scanning calorimetry, optical emission measurement as well as...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ac3040 |
| _version_ | 1797746829271498752 |
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| author | Chunhong Li Xiaoli Kang |
| author_facet | Chunhong Li Xiaoli Kang |
| author_sort | Chunhong Li |
| collection | DOAJ |
| description | Performance of MOF-derived micrometer porous Fe _2 O _3 as the oxidizer in Zr-fuelled thermite is compared with commercial nano-sized Fe _2 O _3 by characterizing thermal and combustion behavior of Fe _2 O _3 /Zr mixture via differential scanning calorimetry, optical emission measurement as well as composition and morphology analysis on condensed combustion products. Results show that thermal behaviors of Fe _2 O _3 /Zr with a slow heating rate have little difference regardless of the kind of Fe _2 O _3 . However, MOF-derived micrometer porous Fe _2 O _3 show an obvious superiority in enhancing combustion of Fe _2 O _3 /Zr heated by a high rate. Combustion reactions of Fe _2 O _3 /Zr under high heating rates are probably rate-controlled by condensed reaction. The better performance of MOF-derived Fe _2 O _3 is attributed to its larger contact area with Zr particle in that micrometer porous Fe _2 O _3 particles are easily broken into primitive nano-sized particles, which effectively avoid the agglomeration of oxidizer. The MOF-derived Fe _2 O _3 particles obtained at calcination temperature of 550 °C enable the best combustion performance of Fe _2 O _3 /Zr thermite. This should be because the crystallinity and porous structure of 550 °C-Fe _2 O _3 are more favorable for the mass transfer process during high-rate combustion. |
| first_indexed | 2024-03-12T15:42:23Z |
| format | Article |
| id | doaj.art-abcb6940ce2a427abe56d65232b76c0b |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:42:23Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-abcb6940ce2a427abe56d65232b76c0b2023-08-09T15:54:17ZengIOP PublishingMaterials Research Express2053-15912021-01-0181010501410.1088/2053-1591/ac3040Effects of oxidizer structure on thermal and combustion behavior of Fe2O3/Zr thermiteChunhong Li0Xiaoli Kang1https://orcid.org/0000-0002-4096-7473School of Materials Science and Engineering, Xihua University , Chengdu 610039, People’s Republic of China; Civil-Military Integration Key Laboratory for Advanced Energetic Materials and Devices, Xihua University , Chengdu 610039, People’s Republic of ChinaCivil-Military Integration Key Laboratory for Advanced Energetic Materials and Devices, Xihua University , Chengdu 610039, People’s Republic of ChinaPerformance of MOF-derived micrometer porous Fe _2 O _3 as the oxidizer in Zr-fuelled thermite is compared with commercial nano-sized Fe _2 O _3 by characterizing thermal and combustion behavior of Fe _2 O _3 /Zr mixture via differential scanning calorimetry, optical emission measurement as well as composition and morphology analysis on condensed combustion products. Results show that thermal behaviors of Fe _2 O _3 /Zr with a slow heating rate have little difference regardless of the kind of Fe _2 O _3 . However, MOF-derived micrometer porous Fe _2 O _3 show an obvious superiority in enhancing combustion of Fe _2 O _3 /Zr heated by a high rate. Combustion reactions of Fe _2 O _3 /Zr under high heating rates are probably rate-controlled by condensed reaction. The better performance of MOF-derived Fe _2 O _3 is attributed to its larger contact area with Zr particle in that micrometer porous Fe _2 O _3 particles are easily broken into primitive nano-sized particles, which effectively avoid the agglomeration of oxidizer. The MOF-derived Fe _2 O _3 particles obtained at calcination temperature of 550 °C enable the best combustion performance of Fe _2 O _3 /Zr thermite. This should be because the crystallinity and porous structure of 550 °C-Fe _2 O _3 are more favorable for the mass transfer process during high-rate combustion.https://doi.org/10.1088/2053-1591/ac3040MOF-derived Fe2O3oxidizerthermitecombustion characteristics |
| spellingShingle | Chunhong Li Xiaoli Kang Effects of oxidizer structure on thermal and combustion behavior of Fe2O3/Zr thermite Materials Research Express MOF-derived Fe2O3 oxidizer thermite combustion characteristics |
| title | Effects of oxidizer structure on thermal and combustion behavior of Fe2O3/Zr thermite |
| title_full | Effects of oxidizer structure on thermal and combustion behavior of Fe2O3/Zr thermite |
| title_fullStr | Effects of oxidizer structure on thermal and combustion behavior of Fe2O3/Zr thermite |
| title_full_unstemmed | Effects of oxidizer structure on thermal and combustion behavior of Fe2O3/Zr thermite |
| title_short | Effects of oxidizer structure on thermal and combustion behavior of Fe2O3/Zr thermite |
| title_sort | effects of oxidizer structure on thermal and combustion behavior of fe2o3 zr thermite |
| topic | MOF-derived Fe2O3 oxidizer thermite combustion characteristics |
| url | https://doi.org/10.1088/2053-1591/ac3040 |
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