热交换器中氦气流量对生长蓝宝石温场影响的研究  

Study of the Influence of the Helium Flux on the Thermal Field of Sapphire Crystal Growth by HEM

作　　者：李跃龙[1] 黎建明[1] 苏小平[1] 杨海[1] 那木吉拉图[1] 李楠[1] 杨鹏[1] 

机构地区：[1]北京有色金属研究总院,北京国晶辉红外光学材料有限公司,北京100088

出　　处：《人工晶体学报》2008年第2期394-398,359,共6页Journal of Synthetic Crystals

摘　　要：采用热交换法生长蓝宝石晶体,通过数值模拟与实验研究了晶体生长过程中热交换器中氦气流量对温场的影响。结果表明:晶体生长过程中固液界面为近弧面;随氦气流量增大,晶体与熔体的温度下降,温度梯度增大;加热器功率缓慢上升。The influence of the helium flux on the thermal field of sapphire crystal growth by heat exchange method （HEM） was studied by heat exchange method simulation and experiments. The results indicate that the solid-liquid interface is arc-shaped, and with the increase of helium flux, the temperature of crystal and melt decreases, the temperature gradients increase, the heater power increases slightly.

关 键 词：蓝宝石 热交换法 数值模拟 氦气流量 

分 类 号：O78[理学—晶体学]