转晶法KDP单晶生长晶面溶质浓度场模拟

人工晶体学报, 2015, 44(2): 342-353.

转晶法KDP单晶生长晶面溶质浓度场模拟

周川 ^1, , 李明伟 ^2, , 尹华伟 ^3, , 宋洁 ^4, , 胡志涛 ^5, , 王邦国 ^6,

1.重庆大学动力工程学院,低品位能源利用技术及系统教育部重点实验室,重庆400030

2.重庆大学动力工程学院,低品位能源利用技术及系统教育部重点实验室,重庆400030

3.重庆大学动力工程学院,低品位能源利用技术及系统教育部重点实验室,重庆400030

4.重庆大学动力工程学院,低品位能源利用技术及系统教育部重点实验室,重庆400030

5.重庆大学动力工程学院,低品位能源利用技术及系统教育部重点实验室,重庆400030

6.重庆大学动力工程学院,低品位能源利用技术及系统教育部重点实验室,重庆400030

基金项目: 国家自然科学基金(51176208,51476014)

关键词：转晶法 , KDP单晶 , 数值模拟 , 过饱和度

Numerical Simulations of Solute Distribution on the Crystal Surface for Growth of KDP Single Crystal by Rotating-crystal Method

Keywords： rotating-crystal method , KDP single crystal , numerical simulation , supersaturation

针对转晶法生长KDP单晶过程,进行了流动与物质输运数值模拟,以获得生长过程中晶面溶质浓度(过饱和度)的变化规律.文中展示了晶体表面浓度分布随时间的变化过程;分析了不同转速和晶体尺寸,对晶面时均浓度场的影响.结果表明,转速越快,晶体表面过饱和度越高;晶体尺寸对其表面过饱和度的大小和分布也有较大影响.此外,由于空间上不对称,Z向和Y向晶面过饱和度分布有较大差异.在晶体处于静止或低转速,自然对流可能会对晶体表面的过饱和度分布产生影响.

参考文献

[1]	Robey HF.;Summerhays KD.;Potapenko SY. ."Bending" of steps on rapidly grown KH2PO4 crystals due to an inhomogeneous surface supersaturation field[J].Journal of Crystal Growth,2000(3/4):340-354.
[2]	Harry F. Robey;Serge Yu. Potapenko .Ex situ microscopic observation of the lateral instability of macrosteps on the surfaces of rapidly grown KH_2PO_4 crystals[J].Journal of Crystal Growth,2000(3/4):355-367.
[3]	Vartak B.;Yeckel A.;Derby JJ.;Kwon YI. .An analysis of flow and mass transfer during the solution growth of potassium titanyl phosphate[J].Journal of Crystal Growth,2000(4):704-718.
[4]	Potapenko SY. .Formation of solution inclusions in crystal under effect of solution flow[J].Journal of Crystal Growth,1998(3):446-455.
[5]	Brailovskaya VA.;Feoktistova LV.;Zilberberg VV. .Numerical investigation of natural and forced solutal convection above the surface of a growing crystal[J].Journal of Crystal Growth,2000(4):767-771.
[6]	Harry F.Robey;Dan Maynes .Numerical simulation of the hydrodynamics and mass transfer in the large scale, rapid growth of KDP crystals. Part 1: Computation of the transient, three-dimensional flow field[J].Journal of Crystal Growth,2001(1/2):263-278.
[7]	H.F. Robey .Numerical simulation of the hydrodynamics and mass transfer in the large scale, rapid growth of KDP crystals―2: computation of the mass transfer[J].Journal of Crystal Growth,2003(4):388-403.
[8]	Xiaoding Wang;Mingwei Li;Yachao Cao;Min Cheng;Jie Song .Computational analysis of three-dimensional flow and mass transfer in a non-standard configuration for growth of a KDP crystal[J].Journal of Crystal Growth,2010(20):2952-2961.
[9]	Xiaoding Wang;Mingwei Li;Yachao Cao;Jie Song;Zhitao Hu .3D numerical simulation for single crystal growth of potassium dihydrogen phosphate in a new solution growth system[J].Journal of Crystal Growth,2011(1):102-109.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网