针对多组元化合物晶体的Bridgman生长过程,通过对液相区流场和浓度场的数值模拟,研究生长过程中容器内部双扩散对流与组分分布的情况.首先对比了三段场和梯度场炉壁温度设计情况下液相区的流体双扩散对流以及组分分布情况.在此基础上,针对梯度场炉壁温度条件,分析了不同参数的影响.结果表明:在溶质格拉晓夫数较大时,它的增大能够明显地削弱液相区的流体流动,从而使得界面附近的组分分布也产生变化;此外,拉晶速度的增大也能够使得液相区的双扩散对流受到抑制.
参考文献
| [1] | Liu XH.;Zhou YH.;Jie WQ. .Numerical analysis on Hg1-xCdxTe growth by ACRT-VBM[J].Journal of Crystal Growth,2000(4):751-762. |
| [2] | Brice J C;Capper P .The Phase Diagram of the PseudoBinary System CdTe-HgTe and the Segregation of CdTe[J].Journal of Crystal Growth,1986,75(02):395-399. |
| [3] | Jie WQ. .The shift of the growth interface during the Bridgman process due to the solute redistribution[J].Journal of Crystal Growth,2000(4):379-384. |
| [4] | Kefeng Shi;Wen-Qiang Lu .Time evolution of double-diffusive convection in a vertical cylinder with radial temperature and axial solutal gradients[J].International Journal of Heat and Mass Transfer,2006(5/6):995-1003. |
| [5] | Adornato P M;Brown R A .Convection and Segregation in Directional Solidification of Dilute and Non-Dilute Binary Alloys:Effects of Ampoule and Furnace Design[J].Journal of Crystal Growth,1987,80(01):155-190. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%