马达加斯加低品质蓝宝石颜色成因及改善工艺研究
Study on Coloration Mechanism and Enhancement of Low Quality Sapphires from Madagascar
邱成君 1王以群 1黄月霞1
作者信息
- 1. 华东理工大学宝石检测中心,上海200237
- 折叠
摘要
马达加斯加是现今世界上最重要的蓝宝石产地,以马达加斯加低品质蓝宝石为研究对象,运用紫外-可见光(UV-Vis)吸收光谱和X射线荧光光谱(XRF)分析其颜色成因并对热处理工艺进行探索.敞口环境下,经1300℃～1600℃,12～20 h热处理,多数样品Fe2+/Ti4+荷移减弱,深蓝色调变浅,部分样品Fe3+含量减少、Ti4+含量增加,显示出纯正的蓝色.
Abstract
Madagascar is now the most important origin of sapphire all over the world.Aiming to analyze the coloration mechanism with ultraviolet-visible absorption spectrum and X-ray fluorescence (XRF) and to explore the heat treatment process of low quality sapphires from Madagascar, the sapphire samples are treated at 1300 ℃～1600 ℃ for 12～20 h in the air, most of the samples become light ones with weaker Fe2+/Ti4+ charge transfer, and some samples show fine color in blue with the decline of Fe3+ and increase of Ti4+.
关键词
光谱学/马达加斯加蓝宝石/热处理/紫外-可见光吸收光谱/X射线荧光光谱Key words
spectroscopy/Madagascar sapphire/heat treatment/ultraviolet-visible absorption spectrum/X-ray fluorescence spectrum引用本文复制引用
出版年
2015
NETL
NSTL
维普
万方数据