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首页> 外文期刊>Science of sintering >Morphology and Microstructure Rearrangement Inside Zno Particles Processed by the Spray Pyrolysis Method
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Morphology and Microstructure Rearrangement Inside Zno Particles Processed by the Spray Pyrolysis Method

机译：喷雾热解法处理Zno颗粒内部的形貌和微观结构重排

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摘要

An analysis of the microstructure evolution of zinc oxide particles in the temperature range from 873 to 1173K produced by the spray pyrolysis method is described. X-ray diffraction (XRD), infrared spectroscopy (IR) and scanning electron microscopy (SEM) ware applied for particle characterization. It was shown that twin-fluid derived ZnO particles are hollow spheres ranging from 1 to 4 #mu#m with the crust thickness of 0.2-0.3 #mu#m that is composed of ZnO microcrystals. The microcrystals' morphology, agglomeration and rearrangement during the process were analyzed by IR spectra in accordance to the theory of the average dielectric constant. It was shown that poorly interconnected assemblages of ZnO microcrystals with axial to radial dimensions close to 1, 2 and 3 are present at the particle core at 873 and 1073K. At 1173K the equiaxed ZnO microcrystals tend to agglomerate and sinter into disc-like structures at the core surfaces.
机译：描述了通过喷雾热解法在873至1173K的温度范围内氧化锌颗粒的微观结构演变的分析。 X射线衍射（XRD），红外光谱（IR）和扫描电子显微镜（SEM）应用于颗粒表征。结果表明，双流体衍生的ZnO颗粒是中空球，范围为1-4μμm，外壳厚度为0.2-0.3μμm，由ZnO微晶组成。根据平均介电常数的理论，通过红外光谱分析了该过程中的微晶形态，团聚和重排。结果表明，在873和1073K的颗粒核上，轴向和径向尺寸接近1、2和3的ZnO微晶相互连接不良。在1173K时，等轴的ZnO微晶趋于团聚并在芯表面烧结成盘状结构。

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