| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
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| Symposium
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Additive Manufacturing of High and Ultra-High Temperature Ceramics and Composites: Processing, Characterization and Testing
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| Presentation Title |
Molten Chloride Salt Corrosion Testing of Ultra High Temperature Ceramics for High Temperature Heat Exchangers Fabricated by Additive Manufacturing Methods
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| Author(s) |
Jeffery J. Haslam, James P. Kelly, Joshuah K. Stolaroff, Michael S Ross, Stephen S Raiman, Bruce A Pint, Dino Sulemanovic |
| On-Site Speaker (Planned) |
Jeffery J. Haslam |
| Abstract Scope |
Additive manufacturing methods allow printing of ceramic powder structures in complex configurations, which can then be sintered to high relative density. One application is to print and sinter Ultra High Temperature Ceramic (UHTC) heat exchangers for use in extracting thermal energy stored in molten salts for power generation applications. In particular, additive manufacturing methods can allow fabrication of Triply Periodic Minimal Surface structures that can increase the volumetric efficiency of heat exchangers. For material screening purposes, a set of corrosion exposure tests were performed with commercial samples of UHTC materials in closed crucible tests at 800°C for 100 hours in a KCl/MgCl2 salt. Dry salt and some wet salt tests were performed. Several UHTC materials including tungsten carbide showed promise in comparison to HaynesTM 230 nickel alloy samples that were tested to provide a relative comparison under the same conditions. |