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首页> 外文期刊>Journal of the European Ceramic Society >Hot isostatically pressed Y2Ti2O7 and Gd2Ti2O7 pyrochlore glass-ceramics as potential waste forms for actinide immobilization
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Hot isostatically pressed Y2Ti2O7 and Gd2Ti2O7 pyrochlore glass-ceramics as potential waste forms for actinide immobilization

机译：热等静电y2ti2o7和gd2ti2o7烧焦玻璃陶瓷作为潜在的废物形式，用于静脉内固定化

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摘要

Both Y2Ti2O7 and Gd2Ti2O7 pyrochlore glass-ceramics (GCs) have been prepared with an oxide route and consolidated via hot isostatic pressing (HIPing) as waste forms for actinide immobilization. The crystallization of Y2Ti2O7/Gd2Ti2O7 pyrochlore as the major actinide host phase in the residue glass has been confirmed with XRD, SEM-EDS and Raman spectroscopy. The static leaching tests confirmed that both GCs are chemically durable with normalized Y/Gd and Ti leach rates similar to 10(-4)-10(-5) g m(-2) d(-1) after 28 days. In addition, the interactions between the 316L stainless steel (SS) HIP-can and the GCs have been investigated. Interactions occur at the interface with a layer of mixed Cr/Ti oxide and CrTi2O5 crystals observed for the Y2Ti2O7 GC and a layer (similar to 10 mu m) of Cr2O3 observed for the Gd2Ti2O7 GC as the reaction fronts from the SS cans. Furthermore, a layer (similar to 10 mu m) of Gd-(Si/Ti)-oxide phase formed on the GC side of the interface.
机译：通过氧化物途径制备Y2Ti2O7和GD2TI2O7烧焦玻璃陶瓷（GCS），并通过热等静压（臀部）固结作为废除恒定固定化的废形式。 用XRD，SEMEDS和拉曼光谱证实了Y2Ti2O7 / Gd2Ti2O7烧火的结晶作为残留物玻璃中的主要散氨酸宿主相。 静态浸出试验证实，在28天后，两种GCS两种GCS在归一化的Y / Gd和Ti浸出速率中具有相似的幂型Y / Gd和Ti浸出速率。 此外，已经研究了316L不锈钢（SS）髋壳和GCS之间的相互作用。 相互作用在具有混合Cr / Ti氧化物层的界面处发生，并且对于Y2Ti2O7 GC观察到的CRTI2O5晶体，并且为来自SS罐的反应前沿观察到GD2Ti2O7 GC的CR2O3的层（类似于10μm）。 此外，在界面的GC侧形成的GD-（Si / Ti） - 氧化物相的层（类似于10μm）。

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  • 作者

    Wei Tao; Zhang Yingjie; Kong Linggen; Kim Young Jip; Xu Alan; Karatchevtseva Inna; Scales Nicholas; Gregg Daniel J.;

  • 作者单位

    Australian Nucl Sci &

    Technol Org Nucl Fuel Cycle Res Theme Locked Bag 2001 Kirrawee Dc NSW 2232 Australia;

    Australian Nucl Sci &

    Technol Org Nucl Fuel Cycle Res Theme Locked Bag 2001 Kirrawee Dc NSW 2232 Australia;

    Australian Nucl Sci &

    Technol Org Nucl Fuel Cycle Res Theme Locked Bag 2001 Kirrawee Dc NSW 2232 Australia;

    Australian Nucl Sci &

    Technol Org Nucl Fuel Cycle Res Theme Locked Bag 2001 Kirrawee Dc NSW 2232 Australia;

    Australian Nucl Sci &

    Technol Org Nucl Fuel Cycle Res Theme Locked Bag 2001 Kirrawee Dc NSW 2232 Australia;

    Australian Nucl Sci &

    Technol Org Nucl Fuel Cycle Res Theme Locked Bag 2001 Kirrawee Dc NSW 2232 Australia;

    Australian Nucl Sci &

    Technol Org Nucl Fuel Cycle Res Theme Locked Bag 2001 Kirrawee Dc NSW 2232 Australia;

    Australian Nucl Sci &

    Technol Org Nucl Fuel Cycle Res Theme Locked Bag 2001 Kirrawee Dc NSW 2232 Australia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 陶瓷工业;
  • 关键词

    Pyrochlore; Glass-ceramic; Actinide immobilization; Hot isostatic pressing;

    机译：Pyrochlore;玻璃 - 陶瓷;神光固定化;热性等静压;

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