Additive manufacturing of thorium dioxide has been investigated using a commercially available stereolithography-based 3D printer and photopolymer resin. Three-dimensional thorium dioxide objects have been printed with good dimensional accuracy. High-density thorium dioxide parts (>90% theoretical density) were achieved by sintering the 3D-printed parts. Despite significant shrinkage, the overall shape of the objects was maintained during sintering with slight distortion. Additive manufacturing is seen to have potential application for advanced nuclear fuel concepts with complex geometries.

中文翻译：

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核燃料材料增材制造的早期进展

已经使用市售的基于立体光刻的3D打印机和光敏聚合物树脂研究了二氧化or的增材制造。三维二氧化or物体已经以良好的尺寸精度进行了打印。高密度的二氧化or零件（> 90％的理论密度）是通过烧结3D打印的零件而获得的。尽管有明显的收缩，但在烧结过程中仍保持了物体的整体形状，并略有变形。增材制造在具有复杂几何形状的先进核燃料概念中具有潜在的应用。