摘要
为研究蓝刚玉的致色成因,利用粉晶衍射(XRD)、电子探针(EPMA)、吸收光谱(UV-VIS)等方法对深蓝色调蓝刚玉样本进行分析。结果表明,该蓝刚玉的致色在宏观上与包裹体及机械混入物有关。在微观上与过渡金属离子,如Fe,Ti有关。主要是由Fe3+的电子跃迁和Fe2+-Ti4+以及Fe2+—Fe3+的电荷转移所致。
The absorption spectral characteristics of the sapphire and the mechanism of coloration of nature sapphire have been studied with XRD、EPMA and Uv-Vis absorption spectrum.The result shows that the color and tone is related to the dark inclutions to a certain extent.From the microscopic point of view,the color of sapphire depends mainly on the bands for charge transfer of Fe2+-Ti4+,Fe2+—Fe3+ and the electronic transition of Fe3+.
出处
《电子测试》
2013年第3X期98-99,56,共3页
Electronic Test
基金
项目号:SKJ2011068
中国地质大学(武汉)教学开放基金项目资助
关键词
蓝刚玉
致色成因
吸收光谱
电子探针
sapphire
mechanism of coloration
absorption spectrum
electron probe
