Impulse mechanical strength improvement of alumina by surface coating
To increase the impulse mechanical strength of alumina, the pore structure of alumina was modified by surface coating. It was found that the impulse mechanical strength of alumina samples coated with aluminum chloride increases from 35 MPa to 51 MPa and the mechanical strength of alumina samples coa...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Journal of Materials Engineering
2024-03-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2023.000612 |
| _version_ | 1797243080402796544 |
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| author | CHEN Zhiqiang LUO Yuhong LIANG Jinghua LIU Mengran WANG Qing DONG Xiaotian |
| author_facet | CHEN Zhiqiang LUO Yuhong LIANG Jinghua LIU Mengran WANG Qing DONG Xiaotian |
| author_sort | CHEN Zhiqiang |
| collection | DOAJ |
| description | To increase the impulse mechanical strength of alumina, the pore structure of alumina was modified by surface coating. It was found that the impulse mechanical strength of alumina samples coated with aluminum chloride increases from 35 MPa to 51 MPa and the mechanical strength of alumina samples coated with aluminum-based complex increases from 21 MPa to 46 MPa at the calcination temperature range of 100 ℃ to 1100 ℃ by the DL-3 typed impulse mechanical strength test device, while the mechanical strength of uncoated alumina samples increases from 17 MPa to 39 MPa. According to scanning electron microscopy and X-ray diffraction, the surface coating of aluminum chloride has little influence on the crystal type of alumina materials after high temperature calcination. At the same time, it can effectively fill the matrix pore of alumina materials, increase the density of the support, and improve the mechanical strength of alumina materials. In addition, compared with the alumina sample coated with aluminum complex, the alumina material coated with aluminum chloride possesses larger surface area and smaller pore size after high temperature calcination. More importantly, the surface of the alumina sample coated with aluminum chloride formed a rough shape after high temperature calcination, which was beneficial to the loading and dispersion of the active metals. |
| first_indexed | 2024-04-24T18:49:26Z |
| format | Article |
| id | doaj.art-4715cd02453c4b2890b357100aa54b93 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 |
| language | zho |
| last_indexed | 2024-04-24T18:49:26Z |
| publishDate | 2024-03-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-4715cd02453c4b2890b357100aa54b932024-03-27T03:28:07ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43812024-03-0152317618110.11868/j.issn.1001-4381.2023.00061220240319Impulse mechanical strength improvement of alumina by surface coatingCHEN Zhiqiang0LUO Yuhong1LIANG Jinghua2LIU Mengran3WANG Qing4DONG Xiaotian5Beijing Key Laboratory of Research and Application for Aerospace Green Propellants, Beijing Institute of Aerospace Testing Technology, Beijing 100074, ChinaBeijing Key Laboratory of Research and Application for Aerospace Green Propellants, Beijing Institute of Aerospace Testing Technology, Beijing 100074, ChinaBeijing Key Laboratory of Research and Application for Aerospace Green Propellants, Beijing Institute of Aerospace Testing Technology, Beijing 100074, ChinaBeijing Key Laboratory of Research and Application for Aerospace Green Propellants, Beijing Institute of Aerospace Testing Technology, Beijing 100074, ChinaBeijing Key Laboratory of Research and Application for Aerospace Green Propellants, Beijing Institute of Aerospace Testing Technology, Beijing 100074, ChinaBeijing Key Laboratory of Research and Application for Aerospace Green Propellants, Beijing Institute of Aerospace Testing Technology, Beijing 100074, ChinaTo increase the impulse mechanical strength of alumina, the pore structure of alumina was modified by surface coating. It was found that the impulse mechanical strength of alumina samples coated with aluminum chloride increases from 35 MPa to 51 MPa and the mechanical strength of alumina samples coated with aluminum-based complex increases from 21 MPa to 46 MPa at the calcination temperature range of 100 ℃ to 1100 ℃ by the DL-3 typed impulse mechanical strength test device, while the mechanical strength of uncoated alumina samples increases from 17 MPa to 39 MPa. According to scanning electron microscopy and X-ray diffraction, the surface coating of aluminum chloride has little influence on the crystal type of alumina materials after high temperature calcination. At the same time, it can effectively fill the matrix pore of alumina materials, increase the density of the support, and improve the mechanical strength of alumina materials. In addition, compared with the alumina sample coated with aluminum complex, the alumina material coated with aluminum chloride possesses larger surface area and smaller pore size after high temperature calcination. More importantly, the surface of the alumina sample coated with aluminum chloride formed a rough shape after high temperature calcination, which was beneficial to the loading and dispersion of the active metals.http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2023.000612aluminaimpulse mechanical strengthsurface coatingaluminum chloride |
| spellingShingle | CHEN Zhiqiang LUO Yuhong LIANG Jinghua LIU Mengran WANG Qing DONG Xiaotian Impulse mechanical strength improvement of alumina by surface coating Cailiao gongcheng alumina impulse mechanical strength surface coating aluminum chloride |
| title | Impulse mechanical strength improvement of alumina by surface coating |
| title_full | Impulse mechanical strength improvement of alumina by surface coating |
| title_fullStr | Impulse mechanical strength improvement of alumina by surface coating |
| title_full_unstemmed | Impulse mechanical strength improvement of alumina by surface coating |
| title_short | Impulse mechanical strength improvement of alumina by surface coating |
| title_sort | impulse mechanical strength improvement of alumina by surface coating |
| topic | alumina impulse mechanical strength surface coating aluminum chloride |
| url | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2023.000612 |
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