采用凝胶注模成型工艺研制Al_2O_3-B_4C环形芯块  

Study on Preparation Process of Al_2O_3-B_4C Annular Pellet by Gel Casting

作　　者：裴启林 许奎[2] 胡海霞[2] 唐明国[2] 乔慧武[2] 张雨[2] 

机构地区：[1]中核辽宁核电有限公司,辽宁葫芦岛125000 [2]中国核动力研究设计院反应堆燃料及材料重点实验室,四川成都610041

出　　处：《原子能科学技术》2016年第6期1107-1111,共5页Atomic Energy Science and Technology

摘　　要：凝胶注模成型是一种原位成型工艺,是制备复杂形状的陶瓷部件的理想工艺。本文采用凝胶注模成型工艺制备Al_2O_3-B_4C环形芯块,主要研究了高固相、低黏度陶瓷浆料的制备,胶凝成型,Al_2O_3-B4C材料的烧结致密化等。结果表明:实验制备的Al_2O_3-B_4C环形芯块的壁厚为1 mm左右,B_4C含量在0.5%~12%之间,芯块的烧结密度在65%TD^93%TD之间。Al_2O_3-B_4C环形芯块满足压水堆可燃毒物材料设计的要求。Gel casting is a kind of in-situ forming process,which is the ideal process for the preparation of complicated shape ceramic part.In this paper,the Al2O3-B4 C annular pellet was prepared by gel casting process,and the preparation of ceramic slurry with high solid loading and low viscosity,gel casting and sintering of Al2O3-B4 C material were researched.The results show that thickness of Al2O3-B4 C annular pellet is around1 mm,the content of B4 C is between 0.5%-12%,and sintering density is between65%TD-93%TD.The Al2O3-B4 C annular pellet meets the design requirement of fuel with burnable poison for pressurized water reactor.

关 键 词：凝胶注模成型 环形芯块 Al2O3-B4C 

分 类 号：TL211.1[核科学技术—核燃料循环与材料]