| 摘要 |
PURPOSE:To synthesize single crystal of beryl of good quality economically with high efficiency by charging salts corresponding to the specified compositional ratio of beryl to a vessel separated into three chambers with baffle plates and producing temp. difference in each chamber. CONSTITUTION:Lithium molybdate, molybdenum trioxide, and vanadium pentoxide, as flux, are added to starting materials comprising beryllium oxide, aluminum oxide, and silicon dioxide having almost equal compositional ratio to beryl, with, if necessary, coloring material such as chromium oxide, and the mixture is heated to above the melting temp. of the flux. At least one kind among the above described starting materials is sintered or vitrified previously and added to the molten salts in the vessel separated into three chambers by baffle plates. Single crystal of beryl is thus synthesized or grown by producing temp. difference between each chamber. |
