山东昌乐蓝宝石生长环带的FTIR和LA-ICP-MS 研究

山东昌乐蓝宝石生长环带的显微红外光谱和LA-ICP-MS研究结果表明: 蓝宝石中的环带颜色成因与晶格中的—OH有相应的关系。在内部含有六边形环带的蓝宝石中, 同一环带上的—OH含量相近; 不同颜色环带中的—OH含量不相同, 其中暗带中的—OH含量最高, 过渡带次之, 亮带为零; 环带中—OH含量与微量元素Ti成正相关, 可以用于反映蓝宝石形成过程中环境的变化。当环境中的含氢量较高时, 会有较多的Ti4+-Fe2+对替代Al3+进入蓝宝石晶格; 当环境中的含氢量较低时, 则较少或者没有Ti4+-Fe2+对替代Al3+进入蓝宝石晶格; 充分考虑蓝宝石晶格中—OH的分布特征, 有利于为蓝宝石的呈色机理研究、高品质蓝宝石合成与优化等提供新的科学思路。

Abstract

The results of micro-infrared spectra and LA-ICP-MS research of growthzones in sapphire showed that there was an internal relationship between the formationof color of growth zone and —OH content in sapphire. In the sapphire which contained hexagonal growth zones, the content of —OH was similar in the same zone and varied from zone to zone. The content of —OH decreased gradually from dark growth zone to light growth zone. The content of —OH depended on the content of trace element Ti in the zones, which suggested that the content of —OH in the growth zones could be used to reflect the change rules of the formation process of sapphire. In the higher hydrogen condition, more Ti4+/Fe2+ substituted Al3+ into the sapphire crystal lattice. Otherwise, less or no Ti4+/Fe2+ substituted Al3+ into the sapphire crystal lattice. Therefore, systematic research of the distribution characteristic of —OH in the sapphire will be conducive to the formation mechanism of color of sapphire and provide new scientific ideas for high quality sapphire synthesis and optimization.

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李晓潇, 杨志军, 黄珊珊, 陈耀明, 曾璇, 周文秀. 山东昌乐蓝宝石生长环带的FTIR和LA-ICP-MS 研究[J]. 光谱学与光谱分析, 2018, 38(2): 407. LI Xiao-xiao, YANG Zhi-jun, HUANG Shan-shan, CHEN Yao-ming, ZENG Xuan, ZHOU Wen-xiu. FTIR Spectra and LA-ICP-MS Research of Growth Zones in Sapphire Bands from Changle, Shandong Province[J]. Spectroscopy and Spectral Analysis, 2018, 38(2): 407.

山东昌乐蓝宝石生长环带的FTIR和LA-ICP-MS 研究

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