激光与光电子学进展, 2015, 52 (8): 083005, 网络出版: 2015-07-29   

红宝石的热处理以及光谱学研究 下载: 1383次

Spectral Characteristics and Heat Treatment Research of Ruby
作者单位
华东理工大学宝石检测中心, 上海 200237
摘要
对缅甸、马达加斯加以及中国云南的红宝石样品进行不同温度制度的热处理,通过热处理前后的光谱特征分析可知,红宝石的主要致色元素为Cr,而Fe、Ti 是红宝石产生蓝紫色调的原因.高温热处理后,由硬水铝石产生的两个红外特征吸收峰1986 cm-1和2123 cm-1消失.Fe 元素的含量对缅甸红宝石的热处理效果有重要的影响;而最高温度的控制是影响马达加斯加红宝石热处理效果的重要因素,其内部黑色钛铁矿会随着温度的升高形成不同的固溶体,这种变化可以在拉曼光谱上明确体现.未经热处理的云南红宝石显示出3310 cm-1的O-H 红外特征吸收峰.光谱学特征分析可以为无损检测红宝石提供可靠的理论依据.
Abstract
According to the spectroscopic analysis results of ruby samples from Burma,Madagascar and China Yunnan before and after heat treatment,the main color element of ruby is Cr and Fe/Ti is the reason why ruby shows blue-violet color.After the heat treatment,1986 cm- 1 and 2123 cm- 1 infrared (IR) absorption peaks produced by diaspora disappear.Burma ruby optimization process should premeditate the content of Fe.The treatment temperature is very important for Madagascar ruby optimization.The Raman spectrum demonstrates that there are different types of solid solution forming in ilmenite inclusions of Madagascar ruby with the temperature variation.The IR spectrum reveals 3310 cm-1 O-H absorption peak in untreated China Yunnan ruby.The spectral changes of rubies before and after heat treatment can be considered as reliable theoretical basis for non-destructive testing of gemstones.
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郭正也, 韩孝朕, 刘学良, 郭守国. 红宝石的热处理以及光谱学研究[J]. 激光与光电子学进展, 2015, 52(8): 083005. Guo Zhengye, Han Xiaozhen, Liu Xueliang, Guo Shouguo. Spectral Characteristics and Heat Treatment Research of Ruby[J]. Laser & Optoelectronics Progress, 2015, 52(8): 083005.

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