Study on the Size Dependence of the Shell-Breaking Response of Micro/Nano Al Particles at High Temperature
The reactivity of Al nanoparticles is significantly higher than that of micron Al particles, and the thermal reaction properties exhibit notable distinctions. Following the previous studies on micron Al particles, the shell-breaking response of Al nanoparticles under vacuum conditions was analyzed u...
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| Format: | Article |
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MDPI AG
2024-01-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/14/3/265 |
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| author | Zhengqing Zhou Lujia Chai Tianyi Wang Huiling Jiang Zhiming Bai Wenbo Yuan Jinguo Sang |
| author_facet | Zhengqing Zhou Lujia Chai Tianyi Wang Huiling Jiang Zhiming Bai Wenbo Yuan Jinguo Sang |
| author_sort | Zhengqing Zhou |
| collection | DOAJ |
| description | The reactivity of Al nanoparticles is significantly higher than that of micron Al particles, and the thermal reaction properties exhibit notable distinctions. Following the previous studies on micron Al particles, the shell-breaking response of Al nanoparticles under vacuum conditions was analyzed using COMSOL simulation. Relationships between thermal stabilization time, shell-breaking cause, shell-breaking response time, and particle size were obtained, and a systematic analysis of the differences between micrometer and nanometer-sized particles was conducted. The results indicate that the thermal stabilization time of both micrometer and nanometer particles increases with the enlargement of particle size. The stress generated by heating Al nanoparticles with sizes ranging from 25–100 nm is insufficient to rupture the outer shell. For particles within the size range of 200 nm to 70 μm, the primary cause of shell-breaking is compressive stress overload, while particles in the range of 80–100 μm experience shell rupture primarily due to tensile stress overload. These results provide an important basis for understanding the shell-breaking mechanism of microns and nanoparticles of Al and studying the oxidation mechanism. |
| first_indexed | 2024-03-08T03:51:26Z |
| format | Article |
| id | doaj.art-1d1e267cf3194c98af5cae9cd89f49ef |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-08T03:51:26Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-1d1e267cf3194c98af5cae9cd89f49ef2024-02-09T15:19:23ZengMDPI AGNanomaterials2079-49912024-01-0114326510.3390/nano14030265Study on the Size Dependence of the Shell-Breaking Response of Micro/Nano Al Particles at High TemperatureZhengqing Zhou0Lujia Chai1Tianyi Wang2Huiling Jiang3Zhiming Bai4Wenbo Yuan5Jinguo Sang6Research Institute of Macro-Safety Science, University of Science and Technology, Beijing 100083, ChinaResearch Institute of Macro-Safety Science, University of Science and Technology, Beijing 100083, ChinaResearch Institute of Macro-Safety Science, University of Science and Technology, Beijing 100083, ChinaResearch Institute of Macro-Safety Science, University of Science and Technology, Beijing 100083, ChinaResearch Institute of Macro-Safety Science, University of Science and Technology, Beijing 100083, ChinaShandong Jinruan Science and Technology Co., Ltd., Yantai 265400, ChinaShandong Jinruan Science and Technology Co., Ltd., Yantai 265400, ChinaThe reactivity of Al nanoparticles is significantly higher than that of micron Al particles, and the thermal reaction properties exhibit notable distinctions. Following the previous studies on micron Al particles, the shell-breaking response of Al nanoparticles under vacuum conditions was analyzed using COMSOL simulation. Relationships between thermal stabilization time, shell-breaking cause, shell-breaking response time, and particle size were obtained, and a systematic analysis of the differences between micrometer and nanometer-sized particles was conducted. The results indicate that the thermal stabilization time of both micrometer and nanometer particles increases with the enlargement of particle size. The stress generated by heating Al nanoparticles with sizes ranging from 25–100 nm is insufficient to rupture the outer shell. For particles within the size range of 200 nm to 70 μm, the primary cause of shell-breaking is compressive stress overload, while particles in the range of 80–100 μm experience shell rupture primarily due to tensile stress overload. These results provide an important basis for understanding the shell-breaking mechanism of microns and nanoparticles of Al and studying the oxidation mechanism.https://www.mdpi.com/2079-4991/14/3/265Al particleshell-core structurethermal stressshell breaking |
| spellingShingle | Zhengqing Zhou Lujia Chai Tianyi Wang Huiling Jiang Zhiming Bai Wenbo Yuan Jinguo Sang Study on the Size Dependence of the Shell-Breaking Response of Micro/Nano Al Particles at High Temperature Nanomaterials Al particle shell-core structure thermal stress shell breaking |
| title | Study on the Size Dependence of the Shell-Breaking Response of Micro/Nano Al Particles at High Temperature |
| title_full | Study on the Size Dependence of the Shell-Breaking Response of Micro/Nano Al Particles at High Temperature |
| title_fullStr | Study on the Size Dependence of the Shell-Breaking Response of Micro/Nano Al Particles at High Temperature |
| title_full_unstemmed | Study on the Size Dependence of the Shell-Breaking Response of Micro/Nano Al Particles at High Temperature |
| title_short | Study on the Size Dependence of the Shell-Breaking Response of Micro/Nano Al Particles at High Temperature |
| title_sort | study on the size dependence of the shell breaking response of micro nano al particles at high temperature |
| topic | Al particle shell-core structure thermal stress shell breaking |
| url | https://www.mdpi.com/2079-4991/14/3/265 |
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