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宝石业是泰国的重要产业之一,但大多数宝石并不完美且带有缺陷,常采用玻璃填充的方法来处理。但该方法填充的宝石含有有毒重金属,因此急需开发新的宝石改性技术。离子束是近来发展起来的新技术,可以用来处理玻璃填充的宝石并可以去除其含有的有毒金属。文中采用泰国本地的玻璃填充红宝石样品先经80 kV加速的氮离子束注入至1017 ions/cm~2剂量,然后分别在泰国清迈和中国武汉用2 Me V和1.7 Me V的质子束做弹性背散射光谱分析。研究了离子束处理前后,玻璃填充宝石的金属杂质、含量及其分布。两地的分析结果互相印证、共同揭示了宝石中主要的有毒金属是铅,铅的浓度经离子束处理后约为0.15%,比离子束处理前降低了20倍,且铅在宝石中的分布是均匀的。结果表明:离子束是一种有效的处理玻璃填充宝石的方法。
The gemstone industry is one of Thailand’s major industries, but most gems are not perfect and flawed and are often handled by glass-filled methods. However, this method of filling gems containing toxic heavy metals, so the urgent need to develop new gem modification technology. Ion beams are a new technology developed recently that can be used to treat glass-filled gems and remove the toxic metals they contain. In this paper, local glass-filled ruby samples from Thailand were first implanted at a dose of 1017 ions / cm 2 by a nitrogen ion beam accelerated at 80 kV and then made elastic with 2 MeV and 1.7 MeV proton beams respectively in Chiang Mai, Thailand and Wuhan, China Backscatter Spectral Analysis. The metal impurities, content and distribution of glass-filled gems before and after ion beam treatment were studied. The results of the analyzes from both places confirm each other and reveal that the major toxic metals in the gemstones are lead. The concentration of lead after ion beam treatment is about 0.15%, 20 times lower than before ion beam treatment, and the distribution of lead in the gemstone Is uniform. The results show that ion beam is an effective method to deal with glass filled gemstones.