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用球磨法与液相沉淀法两种方法分别制备了MnO_2掺杂TeO_2超细粉体,并通过X射线衍射(XRD)、扫描电子显微镜(SEM)和X射线激发发射光谱(XEL)对样品的物相组成、形貌等微观结构和发光性能进行了测试表征。结果表明,通过增加球磨混合时间和改变球磨介质,用球磨法可制得3～4μm的TcO_2粉体。相比球磨法,用液相沉淀法可制得更加均匀和细小的超细粉体,所得粉体的平均颗粒尺寸约为1μm,其发光强度更高。
The powders of MnO 2 -doped TeO 2 were prepared by ball milling method and liquid-phase precipitation method respectively. The microstructure of the samples was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XEL) Phase composition, morphology and other microstructures and luminescence properties of the test characterization. The results show that TcO_2 powder with 3 ~ 4μm can be obtained by ball milling by increasing mixing time and ball milling media. Compared with the ball milling method, a more uniform and fine ultrafine powder can be obtained by the liquid phase precipitation method. The average particle size of the obtained powder is about 1 μm, and the luminous intensity is higher.