About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
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Additive Manufacturing: Architected Structures and Multifunctional Metamaterials
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| Presentation Title |
Gas Flowability and Mechanical Properties of MEX-Fabricated Hastelloy C22 Porous Structures: Influence of Pore Structure Evolution with Sintering Temperature |
| Author(s) |
Juhwan Oh, So-Yeon Park, Ju-Yong Kim, Kee-Ahn Lee, Jung-Yeul Yun |
| On-Site Speaker (Planned) |
Juhwan Oh |
| Abstract Scope |
Hastelloy C22 exhibits excellent corrosion resistance and mechanical strength, making it suitable for porous metal applications. It is widely used for porous filter components in semiconductor processes, where recent demands have focused on optimized geometries for enhanced filtration and permeability. In this study, porous Hastelloy C22 structures were fabricated using the Metal Material Extrusion (MEX) additive manufacturing process to achieve micropore control and design freedom. The effects of sintering temperature (1050–1150°C) on pore structure, gas permeability, and mechanical properties were investigated. As the sintering temperature increased, the relative density increased from 37.9% to 58.3%, resulting in improved strength but reduced permeability. Even at 1150°C, open porosity remained dominant, maintaining sufficient gas flow. This behavior was attributed to particle rearrangement and selective elimination of closed pores. The results demonstrate that the MEX additive manufacturing process can provides a tunable manufacturing strategy capable of controlling pore architecture and balancing permeability and mechanical performance according to component requirements. |