| CeO2掺量对铝硼硅玻璃固化体抗浸出性能的影响 |
| Effect of Mass Fraction of CeO2 on Leaching Behavior of Aluminoborosilicate Glass |
| 作者 | 单位 | E-mail | | 李鹏 | 浙江大学材料科学与工程学系, 硅材料国家重点实验室, 杭州 310027 | | | 丁新更 | 浙江大学材料科学与工程学系, 硅材料国家重点实验室, 杭州 310027
浙江加州国际纳米技术研究院, 杭州 310027 | msedxg@zju.edu.cn | | 杨辉 | 浙江大学材料科学与工程学系, 硅材料国家重点实验室, 杭州 310027
浙江加州国际纳米技术研究院, 杭州 310027 | | | 苏伟 | 中国工程物理研究院, 绵阳 621900 | | | 窦天军 | 中国工程物理研究院, 绵阳 621900 | |
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| 摘要: 通过XRD、XPS、SEM和ICP-MS等表征方法, 研究不同掺量下CeO2在铝硼硅玻璃固化体中物相的变化及其对抗浸出性能的影响。结果表明:玻璃网络结构中nCe4+:nCe3+=9.25:1, 且CeO2质量分数达到或超过7%时, 固化体内开始析出方铈矿晶体结构。1 d时随着CeO2掺量的增加, 玻璃固化体rCe先降低后升高, 28 d时则表现出逐渐降低的趋势。而在同一CeO2掺量下, rCe随浸出时间的延长逐渐降低, 其中CeO2质量分数为9%的玻璃样品bE的rCe在7 d后稳定在4×10-6 g·m-2·d-1以下, 抗浸出性能较为优异。因此控制CeO2在一定范围内过量析出, 可获得抗浸出性能优于完全溶于玻璃体的固化体。 |
| 关键词: CeO2 抗浸出性能 玻璃固化 |
| 基金项目: 浙江省重点科技创新团队资金(No.2009R50010)资助项目。 |
| Abstract: Phase change in aluminoborosilicate glass and effect on leaching behavior were studied with different mass fraction of CeO2 via characterization methods of XRD, XPS, SEM and ICP-MS. The results showed that: In glass network structure the molar ratio of quadrivalence Ce and trivalent Ce was 9.25:1. And when mass fraction of CeO2 met or exceeded 7%, the cerianite began to be precipitated in glass. With mass fraction of CeO2 increasing, rCe of glass decreased at first and then increased in 1 day, and showed trend to decrease in 28 day. However, in the same mass fraction of CeO2, rCe gradually decreased with the prolongation of leaching time. And rCe of the glass sample bE stabilized lower than 4×10-6 g·m-2·d-1 after 7 day with 9wt% CeO2. The leaching behavior was excellent. Hence, controlling CeO2 precipitated within a certain range could be superior to completely dissolving one in glass on leaching behavior. |
| Keywords: CeO2 leaching behavior vitrification |
| 投稿时间：2012-10-20 修订日期：2012-12-05 |
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| 李鹏,丁新更,杨辉,苏伟,窦天军.CeO2掺量对铝硼硅玻璃固化体抗浸出性能的影响[J].无机化学学报,2013,29(4):709-714. |
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