熔融法制备蓝宝石

A melt method for synthesizing sapphire

分别在不同工艺参数下(晶体生长速度:12,18,25 mm/h;气体流速:1.25,0.8,1.5 m3/h),生长出了3根Φ45 mm×160 mm蓝宝石晶体棒。对3种蓝宝石样品进行了不熔物、铁含量、微观气泡、宏观气泡测试。结果表明,当晶体生长速度为12 mm/h,氧气流速为1.25 m3/h,所生长的蓝宝石晶体质量最佳。最后分析了不熔物、气泡、铁杂质的引入机制及减少杂质的措施。

Under different technical conditions such as crystal growing speed and oxygen flowing speed,three high quality sapphire rods with diameter Φ45 mm×160 mm are prepared successfully.Tests of the no-melted,iron content,micro-bubble and macro bubble are carried for the three samples.The results show that the optimal quality of the sapphire is obtained when the growing speed is 12 mm/h and the oxygen flowing rate is 1.25 m3/h.The method to decrease the iron impurity,bubbles and no-melted are discussed at last.