材料科学与工程学报2021，Vol.39Issue(1)：9-15,57,8.DOI:10.14136/j.cnki.issn1673-2812.2021.01.002
基于立体光刻的弥散型核燃料的制备
Fabrication of Dispersion Ceramic Nuclear Fuel bya Stereolithography-based Addictive Manufacturing Process
摘要
Abstract
The distribution of nuclear particles in dispersion-type nuclear fuel pellets is a crucial property since it strongly influences in-pile fuel behaviors.In this study,the stereolithography-based addictive manufacturing (SLAM)was introduced to the fabrication of the MgO-PuO2 dispersion nuclear fuel pellets to ensure a highly uniform distribution of the nuclear fuel microspheres in the pellet.The MgO matrix acts as a structural material that holds pellets in their three-dimensional shape and improves the heat transfer performance of the nuclear fuel pellet due to its high thermal conductivity.A detailed technical route and fabrication processes was described in this research.The influence of the size of MgO particle on the viscosity of the slurry and the thickness of the single slurry layer and the effect of the post-processing of green nuclear fuel pellets were also investigated. The density of MgO in final pellet achieves 3.15 g/cm3 (88.1％ of the theoretical density)and the micro structure of MgO inert matrix was studied by scanning electron microscope (SEM).The cross-sectional views of the final pellet appeared that the distributioe of nuclear fuel microspheres in the pellet was very homogenous.The researches presented provide a way of improving the distribution of the fissile elements in the dispersion-type nuclear fuel pellets.关键词
弥散型核燃料/3d打印/氧化镁浆料/立体光刻Key words
Dispersion nuclear fuel/3d printing/MgO slurry/Stereolithography分类
能源科技引用本文复制引用
廉超,常振旗,孙咏文,郭林,汪渊..基于立体光刻的弥散型核燃料的制备[J].材料科学与工程学报,2021,39(1):9-15,57,8.基金项目
Nature Science Foundation of China (91226109),Chinese Academy of Science (XDA3010402) （91226109）
