About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
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Symposium
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Characterization: Structural Descriptors, Data-Intensive Techniques, and Uncertainty Quantification
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Presentation Title |
3D Morphological Characterization of Porous Cu by Vapor Phase Dealloying Zn-Cu Alloys |
Author(s) |
Qingkun Meng, Kai Wang, Changhang Zhao, Lijie Zou, Yibin Ren, Mingyuan Ge, Xianghui Xiao, Wah-Keat Lee, Yu-chen Karen Chen-Wiegart |
On-Site Speaker (Planned) |
Yu-chen Karen Chen-Wiegart |
Abstract Scope |
Vapor phase dealloying (VPD) is a versatile and environmentally friendly method to fabricate bi-continuous open porous materials. Compared to chemical or metallic dealloying, it uniquely takes advantage of the saturated vapor pressure difference between constituent elements for selectively removing one of the components from an alloy. As an emerging method, the processing-structure relationship in the porous metals fabricated by VPD remains unexplored, which is critical to effectively design new porous metal by VPD. In our work, the three-dimensional (3D) morphology of porous Cu dealloyed from Zn-Cu precursor alloys, was visualized and quantified by synchrotron X-ray nano-tomography. The 3D geometric factors such feature size, shape, tortuosity and curvatures were measured to study the characteristics of the porous structures. We will discuss the mechanisms associated with the porous formation and 3D morphological evolution in VPD. Such understanding will facilitate future development of novel porous materials and applications by this emerging new method. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |