Effect of Shouldering Angle on Distribution of Thermal Stress in Sapphire Single Crystal Growth Using Improved Kyropoulos
来源期刊：JOURNAL OF RARE EARTHS2006年增刊第1期
论文作者：Zuo Hongbo Yao Tai Zhang Mingfu Meng Songhe Han Jiecai
Key words：simulation; thermal stress; sapphire; improved Kyropoulos;
Abstract: A two-dimensional model was established in the rectangular co-ordinate to study the thermal stress in the sapphire single crystal grown by the improved Kyropoulos. In the simulation, the distribution, the maximum and minimum values of the thermal stress were calculated. In addition, the relationship between the thermal stress and the shouldering angles was obtained that for lower shouldering angles, the maximum of the thermal stress value is lower and the minimum value is higher. It indicates that the distribution of the thermal stress can be improved by decreasing the shouldering angles of the crystal during the growth process. To evaluate the model, the experiment was carried out and the results are in good agreement with the calculation.
Zuo Hongbo1，Yao Tai1，Zhang Mingfu1，Meng Songhe1，Han Jiecai1
(1.Research Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, China)
Abstract:A two-dimensional model was established in the rectangular co-ordinate to study the thermal stress in the sapphire single crystal grown by the improved Kyropoulos. In the simulation, the distribution, the maximum and minimum values of the thermal stress were calculated. In addition, the relationship between the thermal stress and the shouldering angles was obtained that for lower shouldering angles, the maximum of the thermal stress value is lower and the minimum value is higher. It indicates that the distribution of the thermal stress can be improved by decreasing the shouldering angles of the crystal during the growth process. To evaluate the model, the experiment was carried out and the results are in good agreement with the calculation.
Key words:simulation; thermal stress; sapphire; improved Kyropoulos;
【全文内容正在添加中】
