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为了缓解钨-低活化钢(W-RAFM)直接连接产生的热应力,加入热膨胀系数介于二者之间的高导热金刚石/铜复合材料作为中间层,并在金刚石/铜两侧辅以Cu Cr Zr箔,达到较高的连接强度。利用超高压力通电短时高效的特点,一次性制备出有金刚石/铜层的W-RAFM模块。ANSYS Workbench的热冲击数值模拟显示,模块可承受1~2 MW/m2的稳态热流冲击。
In order to relieve the thermal stress caused by the direct connection of tungsten-low activation steel (W-RAFM), a high thermal conductivity diamond / copper composite with a coefficient of thermal expansion between the two is added as an intermediate layer and Cu / Cr Zr foil, to achieve a higher connection strength. W-RAFM module with diamond / copper layer was prepared at one time by utilizing the characteristics of short-term and high-efficiency of high-voltage energization. Thermal shock numerical simulations of ANSYS Workbench show that the module can withstand steady-state heat shocks from 1 to 2 MW / m2.