本文的计算方法是根据对晶体生长炉中温场和热交换状态的实验研究提出的.用这种计算已成功地生长出大尺寸的CaF2和BaF2晶体(直径φ400mm),计算方法的准确性已为实验所证实,在许多新建或现有的生长系统中,结果都证明这种计算方法对于解决一些生长和退火问题是有效的.这种方法被广泛地用于估计各种复杂结晶容器的边界条件和在大晶体生长各个阶段的连续温场处理模型.这一点非常重要,因为迄今除了计算以外还没有其它方法可用于分析碱卤化合物材料的熔体-晶体系统的热状态,在用Stockbarger技术中,这些实验结果被成功地用于发展生长设备.
Large size (400mm diameter) CaF2 and BaF2 crystal ingots were grown successfully using our presented calculations based on experimental investigations of temperature fields and thermal exchange conditions in crystal growth furnaces. Our calculation approaches and their precision were confirmed experimentally. Presented results affirm usefulness of this approach to crystal growth and annealing problems solving for many new and for an improvement of existing systems. Calculating methods were extensively used to appraise boundary conditions in crystallizing containers of any complicated configuration and for successive temperature fields modeling for large size crystals at any stage of growth process. This is especially important, since up to the present time, there is no other, except calculated, methods to analyze thermal conditions in systems melt-crystal of alkali halide materials. Experimental results were successfully applied in growth equipment development using Stockbarger technique.
参考文献
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