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本文提供了在空间晶体生长观察装置上,实时观察记录了空间高温氧化物晶体生长过程的新方法.该装置具有自动光电调焦、多工位、自动图像记录等特点,通过设置不同的温控程序,利用该装置测定了高温熔体内的温度分布,同时对高温氧化物晶体材料界面形貌变化及其周围的熔体流动状态进行了分析,并首次观察到空间高温溶质的均匀扩散现象和空间高温溶液内均匀胞状结构的形成过程,最后对比空间和地面的实验结果,阐述重力对流和表面张力对流在微重力条件下对晶体生长的影响机制.
This article provides a new method for real-time observing and recording the growth of high-temperature oxide crystals in the space crystal growth observation device. The device has the features of automatic photoelectric focusing, multi-station and automatic image recording. By setting different temperature control programs, the device is used to measure the temperature distribution in the high-temperature melt and to change the interface morphology of the high-temperature oxide crystal material And the melt flow around it were analyzed. For the first time, the phenomenon of uniform diffusion of solute at high temperature in space and the formation of uniform cell structure in the solution at high temperature were observed. Finally, the experimental results of space and ground were compared to illustrate the effects of gravity convection and surface tension Mechanism of convection on crystal growth under microgravity.