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翡翠(NaAlSi_2O_6)是一种具有较高硬度和较大韧性的矿物质。Loring等人从1948年开始研究翡翠的人工合成,直至1984年底美国G.E.公司才报道高温高压下合成宝石级翡翠成功,但没有详细的工艺说明。本工作仔细探索了宝石级翡翠的合成工艺,研究了压力和温度对翡翠合成的影响和不同离子的掺杂及掺杂浓度对翡翠颜色的影响。 采用改进的Girdle型装置,以管状石墨坩埚为发热体,腔体尺寸为φ8×6mm。压力用室温Bi、Tl、Ba的压力相变点来定标。选用Pt·(30％)Rh-Pt·(6％)Rh热电偶测定温度。以Na_3CO_3、Al_3O_3、SiO_2为原料,按适当的比例混匀,经1350—1550℃灼烧后淬火得到具
Emerald (NaAlSi_2O_6) is a kind of mineral with higher hardness and greater toughness. Loring et al began to study artificial synthesis of jadeite from 1948 until the end of 1984 before the United States reported G.E. synthetic high-temperature synthetic gem-grade jade success, but no detailed process instructions. This work carefully explores the synthetic process of gem grade emerald, studies the influence of pressure and temperature on the emerald synthesis and the effect of different ions doping and doping concentration on emerald color. The use of improved Girdle-type device to a tubular graphite crucible for the heating element, cavity size φ8 × 6mm. Pressure with room temperature Bi, Tl, Ba pressure transformation point to be calibrated. Select Pt (30%) Rh-Pt (6%) Rh thermocouple temperature. Na_3CO_3, Al_3O_3, SiO_2 as raw materials, mixing by the appropriate ratio, by 1350-1550 ° C after ignition obtained by quenching