基于数学模型的CdZnTe合金晶体生长过程影响因素分析  

Influence Factor of Alloy Crystal Cd Zn Te During Growth Process Based on Mathematical Model

作　　者：高芳[1] 

机构地区：[1]河南经贸职业学院,河南郑州450000

出　　处：《铸造技术》2014年第11期2480-2482,共3页Foundry Technology

摘　　要：采用垂直布里奇曼法制备了Cd Zn Te单晶合金,并基于熔体流动方程和能量方程分析了熔体过热温度、坩埚壁强化换热以及坩埚加速旋转对Cd Zn Te合金晶体的生长过程及成分偏析的影响。结果表明,熔体的对流强度、固液界面的凹陷深度和熔体的等浓度密度受熔体的过热温度、坩埚侧面散热强度和坩埚加速旋转影响较大,而合金晶体内轴向等浓度和径向偏析基本不受坩埚侧面散热强度的影响。The single crystal alloy Cd Zn Te was prepared using vertical bridgman method（VBM）, and the effects of melt superheat temperature, heat transfer enhancement of crucible wall and accelerated crucible rotation technique（ACRT） on the growth process and composition segregation of the crystal alloy Cd Zn Te were analyzed basing on the melt flow equation and energy equation. The results show that the effects of convection intensity of melt, cup depth of solid-liquid interface and isoconcentration density of melt on the superheat temperature of melt, heat dissipating strength of crucible side and ACRT are obvious, but the effect of the heat dissipating strength of crucible side on the isoconcentration in axial direction and segregation in radial direction is little.

关 键 词：过热温度 生长过程 CdZnTe合金晶体 

分 类 号：TG146.192[一般工业技术—材料科学与工程]