无机材料学报2022，Vol.37Issue(3)：353-360,8.DOI:10.15541/jim20210636
立体光刻增材制造中固含量对Al2O3陶瓷性能的影响
Effect of Solid Loading on the Property of Al2O3 Ceramics in Stereolithographic Additive Manufacturing
摘要
Abstract
For ceramic stereolithographic (SL) additive manufacturing, the solid loading of ceramic photosensitive slurry plays an important role during the SL process. In this study, Al2O3 ceramics were fabricated by SL additive manufacturing from photosensitive Al2O3 slurries with various solid loadings, and the solid loading-property rela-tionships of Al2O3 ceramic were performed. The effects of solid loading on not only the rheological behavior and curing property of the photosensitive Al2O3 slurry but also the microstructure and mechanical properties of the Al2O3 ceramic were investigated. The results showed that both the viscosity and shear stress increased with the increase of the solid loading. High viscosity was greater than the critical value for self-leveling during the SL process. The curing properties of photosensitive Al2O3 slurries were highly depended on the sold loading. Moreover, clear effects on the defect characteristics of Al2O3 ceramics manufactured from various photosensitive slurries were observed. These manufactured defects are critical for the mechanical behavior of Al2O3 ceramic. In addition, the relationship between rheological behavior and curing property of photosensitive Al2O3 slurry. Meanwhile, the resulting microstructure and mechanical properties of the Al2O3 ceramic were also illustrated. Inhomogeneous structure caused by high viscosity can lead to a sintered ceramic with poor strength. These findings provide fundamental understanding for SL additive manufacturing of ceramics.关键词
Al2O3陶瓷/固含量/光固化/增材制造Key words
Al2O3 ceramics/solid loading/stereolithography/additive manufacturing分类
化学化工引用本文复制引用
刘国仟,闫长海,张可强,金华,何汝杰..立体光刻增材制造中固含量对Al2O3陶瓷性能的影响[J].无机材料学报,2022,37(3):353-360,8.基金项目
National Natural Science Foundation of China(51772028) （51772028）
