静态温梯法中瞬时降温速率对固液界面形状的影响  

Effect of Instantaneous Cooling Rate on Interface Shape 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2期171-176,共6页Journal of Synthetic Crystals

摘　　要：本文用解析和数值计算的方法,证明了静态温梯法晶体生长中,瞬时降温速率有使固液等温面下移且变得更凹的倾向,定义了降温显热数 De=R^2pc_pCo/k(T_h-T_c),用来表征瞬时降温速率使固液等温面变凹的程度。Both analytical methods and numerical techniques showed thatthe instantaneous cooling rate causes the interface to become increasingly con-cave in Vertical Gradient Freeze Method.Dimensionless number D_e=R^2_ρc_pC./〔k(T_h-T_o)〕is defined to express the extent that the interface becomesmore concave arised from instantaneous cooling rate.

关 键 词：静态温梯法 晶体生长 降温 速率 

分 类 号：O786[理学—晶体学]