球磨时间对锰方硼石显微结构和发光特性的影响

使用三维震动高能球磨机对选矿后的锰方硼石粉末进行球磨, 球磨时间设定为30、40及50 min, 采用透射电子显微镜(transmission electron microscope, TEM)、扫描电子显微镜(scanning electron microscope, SEM)以及X射线衍射仪(X-raydiffraction, XRD)对球磨后锰方硼石粉末的形貌和结构进行表征, 利用Scherrer公式计算样品半高宽和晶粒尺寸, 并讨论球磨时间对锰方硼石发光特性的影响。结果表明, 锰方硼石经30、40、50 min高能球磨后, 样品粒径分别达到0.37、0.29、0.28 μm; 随球磨时间增加, 锰方硼石衍射峰明显宽化, (202)、(114)、(404)晶面的衍射峰强度明显降低, 晶面为不完全解理面; 锰方硼石样品发光强度随球磨时间增加明显降低。

Effect of milling time on microstructure and luminescent properties of chambersite

The chambersite powders after mineral separation were prepared by 3D high-energy ball milling for 30, 40, and 50 min in this paper. Scanning electron microscope (SEM), transmission electron microscope (TEM), and X-ray diffraction (XRD) were utilized to characterize the microstructures of chambersite samples, and the Scherrer formula was used to calculate the half-height width and grain size of the samples. The luminescence properties of chambersite milled for different times were discussed. The results show that, the particle size of the chambersite samples after high-energy ball milling for 30, 40, and 50 min reaches 0.37, 0.29, and 0.28 μm, respectively. The diffraction peak of the chambersite samples is broadened with the increase of milling time, and the diffraction intensity of (202), (114), and (404) crystal faces decreases with the increases of milling time, noting the (202), (114), and (404) crystal faces are the incomplete cleavage planes. The luminescence intensity of the chamber site samples decreases remarkably with the increase of milling time.