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用X射线衍射结合Rietveld方法、热释光及微量热分析等,研究了Fe2O3掺杂对同时固溶有Na、K等多种杂质的典型组成阿利特的结构及性能的影响。结果表明:阿利特晶型未发生改变,晶格常数随Fe2O3掺量呈线性变化,并在Fe固溶类型改变处(0.6%Fe2O3)发生突变,符合Vegard固溶体定律。阿利特水化活性和原始热释光性均显著降低,并呈现正相关性,且相关性主要体现在结晶成核与晶体生长控制过程。这一现象可以归因于储存在阿利特中的介稳能量,据此提出了Fe影响阿利特水化的新机制。
The effects of Fe2O3 doping on the structure and properties of alitame, which is a typical component of Na, K and other impurities dissolved in water simultaneously, were investigated by X-ray diffraction, Rietveld method, thermoluminescence and micro-thermal analysis. The results show that there is no change in the crystal form of Alitel, and the lattice constant changes linearly with the amount of Fe2O3, and abruptly changes at the change of Fe solid solution type (0.6% Fe2O3), which accords with the law of Vegard solid solution. Alit hydration activity and the original thermoluminescence were significantly reduced, and showed a positive correlation, and the correlation is mainly reflected in the crystallization nucleation and crystal growth control process. This phenomenon can be attributed to the metastable energy stored in Alite, and accordingly proposed a new mechanism of Fe affecting Alite hydration.