About this Abstract |
Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Symposium
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2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Presentation Title |
Effect of Filler Size on Porosity of Porous Parts Obtained by Laser Sintering and Filler Dissolution |
Author(s) |
Koichi Fujii, Takashi Kigure, Ryuichi Kobayashi, Yuki Ymamauchi |
On-Site Speaker (Planned) |
Koichi Fujii |
Abstract Scope |
To fabricate a porous part, a method has been proposed in which a powder containing a soluble filler is laser sintered, and then the filler is dissolved. The porosity of the part after dissolution in this method can be controlled by the filler content. However, the porosity and content are usually not the same because pores exist in the laser-sintered part due to insufficient powder flow and fusion or dissolution. This study discusses the effect of filler size on powder flowability and part porosity before dissolution. NaCl was mixed with polyamide 12 powder as a soluble filler in each particle size and content. The mixed powder was laser sintered under each input energy. The results showed that the porosity increased as the NaCl particle size decreased. This effect became more significant as the NaCl content increased. |
Proceedings Inclusion? |
Planned: Post-meeting proceedings |