人工晶体学报2012，Vol.41Issue(5)：1458-1462,5.
蓝宝石单晶生长坩埚热应力分析
Thermal Stress Analysis of Sapphire Crystal Growth Crucible
摘要
Abstract
To solve the problem that the short service life of crucible caused by the concentrated thermal stress. Using Ansys FEM analysis to do transient analysis of the heat transfer of crucible when the crystal is melting. Then, coupling the thermal analysis and structural analysis under different conditions, and working out the distribution of thermal stress of the crucible when it has been totally melting. The analysis shows that some ways could reduce heat stress, for example: maximum thermal stress exists the joint of crucible and the tray; slowing the heating rate, decreasing the temperature gradient, increase the diameter of the hollow part of a die-pin, and change the material of the tray and die-pin, etc.关键词
坩埚/有限元/温度场/热应力Key words
crucible/ finite element/ temperature field/ heat stress分类
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白亮亮,刘云霞,杨军良,赵宜琳..蓝宝石单晶生长坩埚热应力分析[J].人工晶体学报,2012,41(5):1458-1462,5.
