报告题目：Ceramic and Glass-Ceramic Wasteforms for Actinide Disposition
 报 告 人：陈龙庆 教授
 报告时间：2017年10月30号上午10:00
 报告地点：广电大楼二楼大课室
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                                                       材料科学与工程学院
                                                          2017年10月240日

 摘要：A considerable amount of nuclear radioactive waste are generated from  the nuclear industry. Among them, the high level nuclear waste,  especially actinide, is highly toxic with extremely long half-life. The  immobilisation into the wasteforms is required for environmental safety  reason.
 Zirconolite glass-ceramic wasteform is the potential host phases for  actinide disposition (e.g. Plutonium). The crystalline phase zirconolite  (CaZrTi2O7) in glass-ceramic acts as the host for plutonium, whilst the  glass matrix is intended to digest the remainder of the residue. In the  present work, we focused the radiation and dissolution behaviour of the  zirconolite glass-ceramic.
 Meanwhile, the synthesis of some pyrochlore and zirconolite ceramics is  of our interest. The waste loading, the yield of the target phase, the  local environment of actinide element and the microstructure are  discussed on the example of CaUTi2O7.


 个人简介：Shikuan Sun obtained his Bachelor degree at South China University  of Technology (SCUT) in 2007 and afterwards he was awarded his PhD in  2012 from Shanghai Institute of Ceramics, Chinese Academy of Sciences.  From 2015, Shikuan Sun undertook a post-doctoral research position  working for the Immobilisation Science Laboratory, University of  Sheffield under the supervision of Professor Neil Hyatt. Currently,  Shikuan is working on the EPSRC project of ‘Decommissioning,  Immobilisation and Storage solutions for Nuclear Waste Inventories’. His  research interests are: 1. Wasteforms for radioactive waste disposal;  2. Structure-property relations in ceramic materials.