High Calorific Values Boron Powder: Ignition and Combustion Mechanism, Surface Modification Strategies and Properties
Boron powder is a kind of metal fuel with high gravimetric and volumetric calorific values, which has been widely used in military fields such as solid propellants, high-energy explosives, and pyrotechnics. However, the easily formed liquid oxide layer can adhere to the surface of boron powder and r...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-04-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/7/3209 |
| _version_ | 1827746648708612096 |
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| author | Yang Liu Yinglei Wang Yuezhou Liu Baodong Zhao Weixiao Liu Qilong Yan Xiaolong Fu |
| author_facet | Yang Liu Yinglei Wang Yuezhou Liu Baodong Zhao Weixiao Liu Qilong Yan Xiaolong Fu |
| author_sort | Yang Liu |
| collection | DOAJ |
| description | Boron powder is a kind of metal fuel with high gravimetric and volumetric calorific values, which has been widely used in military fields such as solid propellants, high-energy explosives, and pyrotechnics. However, the easily formed liquid oxide layer can adhere to the surface of boron powder and react with the hydroxyl (-OH) group of hydroxyl-terminated polybutadiene (HTPB) binder to form a gel layer that is detrimental to propellant processing and restricts the complete oxidation of boron powder. Therefore, to improve the combustion efficiency of boron powder, the ignition and combustion mechanisms of boron powder have been studied, and surface coating modification strategies have been developed by researchers worldwide, aiming to optimize the surface properties, improve the reaction activity, and promote the energy release of boron powder. In this review, recent studies on the ignition and combustion mechanisms of boron powder are discussed. Moreover, the reported boron powder coating materials are classified according to the chemical structure and reaction mechanism. Additionally, the mechanisms and characteristics of different coating materials are summarized, and the mechanism diagrams of fluoride and metal oxide are provided. Furthermore, promising directions for modification methods and the potential application prospects of boron powder are also proposed. |
| first_indexed | 2024-03-11T05:30:17Z |
| format | Article |
| id | doaj.art-f440dd5afe12416d86f7c705bf544187 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T05:30:17Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-f440dd5afe12416d86f7c705bf5441872023-11-17T17:15:10ZengMDPI AGMolecules1420-30492023-04-01287320910.3390/molecules28073209High Calorific Values Boron Powder: Ignition and Combustion Mechanism, Surface Modification Strategies and PropertiesYang Liu0Yinglei Wang1Yuezhou Liu2Baodong Zhao3Weixiao Liu4Qilong Yan5Xiaolong Fu6Xi’an Modern Chemistry Research Institute, Xi’an 710065, ChinaXi’an Modern Chemistry Research Institute, Xi’an 710065, ChinaXi’an Modern Chemistry Research Institute, Xi’an 710065, ChinaXi’an Modern Chemistry Research Institute, Xi’an 710065, ChinaXi’an Modern Chemistry Research Institute, Xi’an 710065, ChinaScience and Technology on Combustion, Internal Flow and Thermo-Structure Laboratory, School of Aerospace, Northwestern Polytechnical University, Xi’an 710072, ChinaXi’an Modern Chemistry Research Institute, Xi’an 710065, ChinaBoron powder is a kind of metal fuel with high gravimetric and volumetric calorific values, which has been widely used in military fields such as solid propellants, high-energy explosives, and pyrotechnics. However, the easily formed liquid oxide layer can adhere to the surface of boron powder and react with the hydroxyl (-OH) group of hydroxyl-terminated polybutadiene (HTPB) binder to form a gel layer that is detrimental to propellant processing and restricts the complete oxidation of boron powder. Therefore, to improve the combustion efficiency of boron powder, the ignition and combustion mechanisms of boron powder have been studied, and surface coating modification strategies have been developed by researchers worldwide, aiming to optimize the surface properties, improve the reaction activity, and promote the energy release of boron powder. In this review, recent studies on the ignition and combustion mechanisms of boron powder are discussed. Moreover, the reported boron powder coating materials are classified according to the chemical structure and reaction mechanism. Additionally, the mechanisms and characteristics of different coating materials are summarized, and the mechanism diagrams of fluoride and metal oxide are provided. Furthermore, promising directions for modification methods and the potential application prospects of boron powder are also proposed.https://www.mdpi.com/1420-3049/28/7/3209boron powderignition mechanismcombustion mechanismsurface modificationcoating |
| spellingShingle | Yang Liu Yinglei Wang Yuezhou Liu Baodong Zhao Weixiao Liu Qilong Yan Xiaolong Fu High Calorific Values Boron Powder: Ignition and Combustion Mechanism, Surface Modification Strategies and Properties Molecules boron powder ignition mechanism combustion mechanism surface modification coating |
| title | High Calorific Values Boron Powder: Ignition and Combustion Mechanism, Surface Modification Strategies and Properties |
| title_full | High Calorific Values Boron Powder: Ignition and Combustion Mechanism, Surface Modification Strategies and Properties |
| title_fullStr | High Calorific Values Boron Powder: Ignition and Combustion Mechanism, Surface Modification Strategies and Properties |
| title_full_unstemmed | High Calorific Values Boron Powder: Ignition and Combustion Mechanism, Surface Modification Strategies and Properties |
| title_short | High Calorific Values Boron Powder: Ignition and Combustion Mechanism, Surface Modification Strategies and Properties |
| title_sort | high calorific values boron powder ignition and combustion mechanism surface modification strategies and properties |
| topic | boron powder ignition mechanism combustion mechanism surface modification coating |
| url | https://www.mdpi.com/1420-3049/28/7/3209 |
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