CAJ | 학술논문

采用高温固相法制备了BaZrSi3O9样品,通过X射线粉末衍射仪、荧光光谱仪和热释光计量计测试了样品的物相结构、荧光光谱、余辉衰减曲线、热释光温度曲线和应力发光特性.测试结果表明:发射光谱峰位于435 nm,具有可重复利用性,属于非破坏性发光,样品应力发光强度与承受的机械应力在一定范围内成正比的规律性.研究表明应力发光的原理与长余辉相似,缺陷势阱捕获的电荷载流子受到外界的影响而释放,与发光中心复合从而产生发光.样品波长属于可见光,可以用作检测应力强度及探测结构破坏位置的图像传感器,从而实现非破坏性应力实时监测及应力可视化.
채용고온고상법제비료BaZrSi3O9양품,통과X사선분말연사의、형광광보의화열석광계량계측시료양품적물상결구、형광광보、여휘쇠감곡선、열석광온도곡선화응력발광특성.측시결과표명:발사광보봉위우435 nm,구유가중복이용성,속우비파배성발광,양품응력발광강도여승수적궤계응력재일정범위내성정비적규률성.연구표명응력발광적원리여장여휘상사,결함세정포획적전하재류자수도외계적영향이석방,여발광중심복합종이산생발광.양품파장속우가견광,가이용작검측응력강도급탐측결구파배위치적도상전감기,종이실현비파배성응력실시감측급응력가시화.
Mechanoluminescence is a type of luminescence caused by the application of mechanical ener-gy to solids.In this paper,powder of BaZrSi 3 O9 is synthesized by the conventional solid state reaction.Then thermoluminescence and mechanoluminescent properties are studied.Phase and crystal structure of the obtained materials can be determined by X-ray diffraction ( XRD).Hence photoluminescent spectrum and mechanoluminescent measurement show that the emission peak is about 435 nm.The mechanolumi-nescence results present that the intensities of samples are well dependent on the stress,indicating that these mechanoluninescent materials can be potentially used as sensors to detect the dynamic visualization of stress distribution of an object.The results also suggest that the trap and the worse symmetry of crystal structure are responsible for the mechanoluninescent intensity of BaZrSi 3 O9.