静态温梯法中纵向温度分布对固液界面形状的影响  

Effect of Longitudinal Temperature Distribution on Interface Convexity in Vertical Gradient Freeze Growth

作　　者：潘佩聪[1] 卢志英[2] 颜声辉[1] 邓佩珍[1] 干福熹[1] 

机构地区：[1]中国科学院上海光学精密机械研究所,上海201800 [2]上海机械学院

出　　处：《人工晶体学报》1992年第1期45-52,共8页Journal of Synthetic Crystals

摘　　要：本文证明了静态温梯法中坩埚侧壁处的纵向温度分布 T_(?)(z)的函数形式,对坩埚中固液等温面的凸度有着重要影响作用。指出通过温度场“调零”过程后,利用(?)~2T_(?)(z)/(?)z^2的符号和大小来判断坩埚中固液面凸度分布情况。并且认为在实际工作中T_(?)(z)可以用热电偶在坩埚外壁处测量而得到。Longitudinal temperature distribution expressed by T_f(z)atthe crucible wall in vertical gradient freeze growth strongly influences theinterface.convexity By means of zero setting for convexity of isothermal itis convenient to determine the convexity distribution along the crucible axisby the sign and absolute value of (?)~2T_f(z)/(?)z^2.the function T_f(z)can beobtained by measuring temperature at the outside wall of crucible by using thermocouples.

关 键 词：温梯法 等温线 固液界面 凸度 

分 类 号：TQ013.1[化学工程]