| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
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| Symposium
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Materials Informatics for Images and Multi-dimensional Datasets
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| Presentation Title |
Characterization of Additively Manufactured ZrB2-SiC Ultra High Temperature Ceramics via X-ray Microtomography |
| Author(s) |
Pratish R. Rao, Jonghyun Park, Jeremy Watts, William Fahrenholtz, Gregory Hilmas, David Lipke |
| On-Site Speaker (Planned) |
Pratish R. Rao |
| Abstract Scope |
Additively manufactured (AM) zirconium diboride-silicon carbide (ZrB2-SiC) composites are being considered as potential Brayton Cycle based heat exchangers materials, with supercritical CO2 as the working fluid, operating at temperatures as high as 1100 oC and pressures up to 250 bar. An extensive understanding of microstructure is thus critical in refining the processing parameters, resulting in fabrication of the components with long term durability. X-ray micro-computed tomography has been employed to quantitatively study the microstructural features of ZrB2-SiC systems.
In this research, X-ray microtomography imaging was employed as a nondestructive characterization technique to analyze the microstructural aspects of the additively manufactured ceramic components. Statistical analysis was performed on 2D microtomographic projections of ZrB2-SiC (70-30 vol.%) sintered bodies to understand the interplay between processing parameters and the ensuing microstructure. The analysis of X-ray microtomography provided information on pore sizes and distribution, geometry and the allowable tolerances for longstanding durability under thermomechanical loading.
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