Rapid immobilization of complex simulated radionuclides by as-prepared Gd2Zr2O7 ceramics without structural design

Rapid immobilization of complex simulated radionuclides by as-prepared Gd2Zr2O7 ceramics without structural design
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无需结构设计即可通过制备的 Gd2Zr2O7 陶瓷快速固定复杂的模拟放射性核素

DOI:
10.1016/j.jnucmat.2019.151782
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发表时间:
2019-12
影响因子:
3.1
通讯作者:
Xirui Lu
Xirui Lu
中科院分区:
工程技术2区
文献类型:
--
作者:
Xiaoyan Shu;Qi Qing;Bingsheng Li;Yushan Yang;Linyan Li;Haibin Zhang;Dadong Shao;Xirui Lu

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寻找一种简单、快速的方法将复杂的核废料固定到稳定状态是十分必要的。陶瓷矩阵。本工作通过在制备的基质中引入复杂的废弃物,避免了复杂的晶格占用设计。采用火花等离子烧结(SPS)方法,在3 min内将两种模拟TRPO(三烷基氧化膦)废弃物导入制备的Gd2Zr2O7基体中。假设废料组成,特别是熔点较低的氧化物(MoO3、RuO2和PdO)和Gd2Zr2O7 (ZrO2)原料的含量决定了最终溶解度。此外,所得化合物表现出高度致密的微形貌。Mo、Ru和Pd随着掺杂量的增加呈现出更明显的富集,而其他掺杂元素对最高掺杂量的富集不明显。这些结果表明了一种快速有效地将高熔点氧化物固定在制备的基体上而不考虑晶格占用的方法。
It is rather necessary to find a simple and rapid way to immobilize complex nuclear waste into stable.ceramic matrix. In this work, complicated lattice occupation design was avoided through introducing complex waste into as-prepared host matrix. Two types of simulated TRPO (trialkyl phosphine oxides) wastes were introduced into as-prepared Gd2Zr2O7 matrix by spark plasma sintering (SPS) in 3 min. It is assumed that the waste composition, especially the contents of oxides with relatively low melting point (MoO3, RuO2 and PdO) and raw material for Gd2Zr2O7 (ZrO2), determines the final solubility. Moreover, the obtained compounds exhibit highly densified microtopography. Mo, Ru and Pd show more obvious enrichment with increased dopant while other doped elements show unobservable enrichment to the highest dopant. These results express a rapid and efficient way to immobilize oxides of high melting point into as-prepared host matrix without lattice occupation consideration.
TRPO 废物掺入 Gd2Zr2O7 烧绿石的相结构和水稳定性
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发表时间: 2015-11
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DOI: --
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