垂直布里奇曼法生长铜单晶体的研究

Study on Copper Single Crystal Grown by Vertical Bridgman Method

Cu单晶在中子和X射线单色器及激光核聚变靶材等领域有重要应用前景。本文采用自制的硅钼棒单晶生长炉和特制的镀碳石英生长坩埚,采用垂直布里奇曼法在30℃/cm的温度梯度下,以10 mm/d的下降速度生长出较高质量的铜单晶体。生长的晶体经多次研磨抛光腐蚀处理后进行X射线衍射分析和金相分析,显示出(200)晶面尖锐的X射线衍射峰和规则的方形蚀坑,表明生长的晶体结构完整。

The high-quality copper single crystals have been successfully grown by the vertical Bridgman method(VBM),using a self-made growth furnace which is heated with four molybdenum disilicide rods.The parameters for crystal growth are typically as follows: temperature gradient at the solid-liquid interface is about 30 ℃/cm,the descending speed of the crucible is about 10 mm/d.After being polished several times,the copper crystal was analyzed by the X-ray diffraction and metallographic phase.The results show that...