Properties and vibrational spectra of magnesium phosphate glasses for nuclear waste immobilization

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• 作者：Toshinori Okura ; Tomoko Miyachi and Hideki Monma
• 关键词：Thermal properties ; Vibrational spectra
• 刊名：Journal of the European Ceramic Society
• 出版年：2006
• 出版时间：2006
• 年：2006
• 卷：26
• 期：4-5
• 页码：831-836
• 全文大小：411 K

文摘

The leaching behavior and structure of magnesium phosphate glasses containing 45–55 mol % MgO incorporated with simulated high level nuclear wastes (HLW) were studied. The leach rate of the waste glasses decrease with increasing of the simulated HLW content. The gross leach rate of the glass waste form containing 50 mol % MgO and 45 mass % simulated HLW is of the order of 10⁻⁶ g/cm² day at 90 °C, which is small enough as compared with the corresponding release from a currently used borosilicate glass waste form. The isolated ions such as dimeric (P₂O₇)⁴⁻ and monomeric (PO₄)³⁻ ions increase upon as increasing the incorporating amount of the simulated HLW. The changes in properties can be attributed to the structure changes owing to the incorporation of the simulated HLW.