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利用穆斯堡尔谱分析结果以及前人光谱分析等资料 ,从铁离子的价态入手 ,重新确立了山东蓝宝石的呈色机制 ,确定出致蓝因素与致黑因素。认为Fe2 + 与Ti4 + 对可见光 5 65nm的吸收是使蓝宝石产生美丽蓝色调的原因 ,而Fe3 + 对可见光 4 42nm的吸收是使蓝宝石呈黑色的原因 ,并在此基础上进行了以消除Fe3 + 、保障并增加Fe2 + 和Ti4 + 为宗旨的改色实验 ,取得了较好的效果。
Based on the Mossbauer spectroscopy results and previous spectroscopic analysis data, starting from the valence state of iron ions, the coloring mechanism of Shandong sapphire was reestablished and the factors causing blueness and blackening were determined. It is considered that the absorption of visible light at 652nm by Fe2 + and Ti4 + is the reason that sapphire produces a beautiful blue tone, and the absorption of 4242nm by visible light is the reason why sapphire is black. On the basis of this, , Protect and increase Fe2 + and Ti4 + for the purpose of the color change experiment, and achieved good results.