| WU Yu-li,HOU Guo-liang,CUI Hai-xia,CHEN Lei,AN Yu-long,ZHOU Hui-di,CHEN Jian-min.Research Progress on SrAl2O4-based Mechanoluminescent Monitoring and Warning Coatings[J],52(4):124-137 |
| Research Progress on SrAl2O4-based Mechanoluminescent Monitoring and Warning Coatings |
| |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2023.04.009 |
| KeyWord:mechanoluminescence SrAl2O4 elements doping preparation method monitoring and warning coatings |
| Author | Institution |
| WU Yu-li |
Key Laboratory of Science and Technology on Wear and Protection of Materials CAS, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou , China;Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing , China |
| HOU Guo-liang |
Key Laboratory of Science and Technology on Wear and Protection of Materials CAS, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou , China |
| CUI Hai-xia |
Key Laboratory of Science and Technology on Wear and Protection of Materials CAS, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou , China |
| CHEN Lei |
Key Laboratory of Science and Technology on Wear and Protection of Materials CAS, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou , China;Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing , China |
| AN Yu-long |
Key Laboratory of Science and Technology on Wear and Protection of Materials CAS, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou , China;Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing , China |
| ZHOU Hui-di |
Key Laboratory of Science and Technology on Wear and Protection of Materials CAS, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou , China;Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing , China |
| CHEN Jian-min |
Key Laboratory of Science and Technology on Wear and Protection of Materials CAS, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou , China;Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing , China |
|
| Hits: |
| Download times: |
| Abstract: |
| The frequent occurrence of lots of sudden safety accidents in infrastructure, such as highway bridge collapse, wind turbine blade breakage, ocean mining platform explosion, etc., is caused to a large extent by the fact that the structural damage of the base facilities cannot be detected in time, which have seriously endangered the safety of people's lives and property. Fortunately, if the mechanoluminescent materials are used to construct functional coatings on the surface of target structures, it can not only monitor and early warn structural damage, but also can be able to provide scientific evidence for maintenance work by staff and damage mechanism research, which will greatly improve the safety of facilities in service. In order to better promote the research and development of monitoring and early warning coating materials and meet the needs of engineering applications. In this paper, the elastic-mechanoluminescent materials and their basic characteristics are introduced to begin with, and by comparing these materials, the results indicate that SrAl2O4-based materials have outstanding advantages, such as stable physical and chemical properties, environmentally friendly, especially long afterglow time, etc., and it is considered to be a kind of materials with the most application potential at home and abroad. Then, the SrAl2O4-based mechanoluminescent materials are introduced in detail, and the crystal structure of the matrix and the existence of various defect types having an influence on the energy level distribution, electron motion state, and the absorption and emission of light are comprehensively and systematically analyzed. the regulation of luminescence properties such as stress luminescence intensity, color, wavelength band and sensitivity by element-doped matrix is discussed, and specific strategies to meet different application requirements are given. The regulation of luminescence properties such as mechanoluminescent intensity, color, wavelength band and sensitivity by element-doped matrix is discussed, in addition, the control strategies to meet different application requirements are given. Subsequently, the commonly used detection and characterization methods of mechanoluminescence are introduced, and the mechanism of mechanoluminescence formed based on phenomenon analysis given by researchers at this stage and the intrinsic relationship between structure and properties are given. On this basis, this paper further summarizes the main methods of preparing SrAl2O4-based mechanoluminescent powders and the core factors affecting the phase structure, crystal size and luminescent properties of the materials, and analyzes their advantages and disadvantages. In addition, the surface engineering technology for preparing monitoring and warning coatings at home and abroad and a series of engineering application cases are introduced in detail, and it is found that the coating still has a series of urgent problems to be solved in the process of practical application, such as low sensitivity, harsh post-treatment process and poor interfacial bonding. Last but not least, from the perspective of exploring the nature of mechanoluminescence, the preparation of monitoring and warning coatings, and the formulation of production test standards, some suggestions for future research and development that should be focused on are also proposed in a targeted manner so as to provide ideas for researchers to carry out follow-up research work. |
| Close |
|
|
|