ZrO_(2)和UO_(2)芯块表面CeB_(6)涂层的制备和表征  

Preparation and Characterization of CeB_(6)Thin Films Deposited on ZrO_(2)and UO_(2)Fuel Pellets

作　　者：王晓姣 范武刚[1] 陈向阳 卢俊强 朱丽兵 张兆泉[1] WANG Xiaojiao;FAN Wugang;CHEN Xiangyang;LU Junqiang;ZHU Libing;ZHANG Zhaoquan(Shanghai Institute of Ceramic,Chinese Academy of Sciences,Shanghai 201899,China;Shanghai Nuclear Engineering Research and Design Institute,Shanghai 200233,China)

机构地区：[1]中国科学院上海硅酸盐研究所,上海201899 [2]上海核工程研究设计院有限公司,上海200233

出　　处：《核科学与工程》2024年第4期947-953,共7页Nuclear Science and Engineering

基　　金：国家重大科技专项(2017ZX06002004,大型先进压水堆及高温气冷堆核电站)。

摘　　要：CeB_(6)涂层作为适用先进反应堆燃料型号的自主化整体型可燃毒物材料,具有展平堆芯中子注量分布,实现长周期反应性控制和慢化剂负温度系数控制的功能,可集成在可燃毒物燃料元件中应用于压水堆反应堆堆芯。本研究采用磁控溅射方法在ZrO_(2)和UO_(2)圆柱芯块表面涂覆了CeB_(6)涂层。用X射线衍射仪(XRD)、扫描电镜(SEM)对涂层物相、结构和成分进行了表征,采用热循环及划痕法对涂层与基体的结合性能进行了考核。结果表明,ZrO_(2)和UO_(2)芯块表面制备的涂层为CeB_(6)且膜层较为纯净;CeB_(6)膜层与ZrO_(2)、UO_(2)基体结合性能良好,膜层生长致密均匀;ZrO_(2)基底上CeB_(6)膜层破坏的临界载荷为8.25 N;UO_(2)芯块基底上CeB_(6)膜层破坏的临界载荷为17.6 N。CeB_(6)is proposed as an Integral-Fuel-Burnable-Absorber(IFBA),which can be used to optimize the burning of nuclear fuels for pressurized water reactor.In this paper,CeB_(6)films were prepared on the surfaces of ZrO_(2)cylinder and UO_(2)fuel pellets by magnetron sputtering.The crystallographic structure of CeB_(6)films were analyzed by X-ray diffraction(XRD).The microstructures and compositions of CeB_(6)films were observed with scanning electron microscope(SEM)and X-ray energy dispersion(EDS).The adhesive force after thermal shock of CeB_(6)films were studied by micro-scratch test and scanning electron microscope.The results show that the films are fully densified on the surfaces of ZrO_(2)cylinder and UO_(2)fuel pellets and have excellent adhesion to the substrates.The critical load of CeB_(6)films deposited on ZrO_(2)and UO_(2)fuel pellets were 8.25 N and 17.6 N,respectively.

关 键 词：UO_(2)芯块 CeB_(6)涂层 磁控溅射 

分 类 号：TL48[核科学技术—核技术及应用]