SrAl_(2)O_(4)基应力发光监测预警涂层的研究进展  

Research Progress on SrAl_(2)O_(4)-based Mechanoluminescent Monitoring and Warning Coatings

作　　者：吴玉礼 侯国梁[1] 崔海霞[1] 陈磊[1,2] 安宇龙 周惠娣[1,2] 陈建敏 WU Yu-li;HOU Guo-liang;CUI Hai-xia;CHEN Lei;AN Yu-long;ZHOU Hui-di;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 730000,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院兰州化学物理研究所中科院材料磨损与防护重点实验室,兰州730000 [2]中国科学院大学材料与光电研究中心,北京100049

出　　处：《表面技术》2023年第4期124-137,共14页Surface Technology

基　　金：中国科学院材料磨损与防护重点实验室青年基金(SYSQJ-2020-1);中国科学院青年创新促进会会员资助(2020416)。

摘　　要：采用应力发光材料在目标结构表面构筑功能涂层可对结构损伤进行实时监测预警,不仅提高了设施的安全性,还为检修工作和损伤机理的研究提供了帮助,应用潜力巨大。为促进这类涂层的研发与应用,首先介绍了弹性应力发光材料的发展历程及基本特征,通过对比突出了SrAl_(2)O_(4)基材料的综合优势。然后详细分析了SrAl_(2)O_(4)基质的晶体结构、缺陷类型对能级分布、电子运动状态以及光的吸收与发射性能的影响,并论述了元素掺杂对发光强度、波段和灵敏度等发光性能的影响。接着介绍了应力发光常用的检测表征方法和基于现象分析形成的应力发光机理。在此基础上,进一步总结归纳了制备应力发光粉末的主要方法以及影响其物相结构、晶体尺寸和发光性能的核心因素,分析了各自的优缺点。详细介绍了制备监测预警涂层的表面技术和工程应用案例,发现该类涂层仍存在敏感度不高、后处理工艺苛刻和界面结合差等问题。最后,从探究应力发光本质、制备实用性更强的预警涂层和制定生产测试标准3个角度提出了一些建议。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 SrAl_(2)O_(4)-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 SrAl_(2)O_(4)-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,t

关 键 词：应力发光 SrAl_(2)O_(4) 元素掺杂 制备方法 监测预警涂层 

分 类 号：TB34[一般工业技术—材料科学与工程]