| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
High-temperature, High-toughness, Corrosion-resistant Cermet Alloys (NiWC) for CSP Gen 3 Subsystem Component Design
|
| Author(s) |
Lewis Francisco Handy-Cardenas, Mohamed Elbakhshwan, Scott Lee, Mark Anderson, Joseph Hensel, Gabriel Santillan |
| On-Site Speaker (Planned) |
Lewis Francisco Handy-Cardenas |
| Abstract Scope |
Novel cermet alloys (Nickel-Tungsten Carbide) have been studied in efforts of finding solutions to the corrosion found in novel CSP Gen 3 systems featuring chloride salts (MgCl2-KCl-NaCl). These tests featured: The cermet in different compositions (NiWC3a, NiWC3b, NiWC3c), as a high velocity oxygen fuel (HVOF) coating, Inconel 617, Inconel 625 and Haynes 230. Corrosion rates from 250-hour molten salt tests (750 °C) were found tracking weight change, performing scanning electron microscopy (SEM) and electron dispersive spectroscopy (EDS). The novel cermet performed well were the substrates exhibit grain boundary attack and Cr depletion. Pin-On-Disk testing was also performed (550 RPM & 960 RPM) to assess the friction and wear performance of materials (NiWC vs Haynes 230) in molten salt (725 °C) for up to 96 hours. The wear rate on the cermet was lower, and strong evidence of material deposition (Nickel) on the Haynes 230 disk was found. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Mechanical Properties, Mechanical Properties |