| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Ceramics for a New Generation of Nuclear Energy Systems and Applications
|
| Presentation Title |
Comparison of ZrC-TZM Mechanical and Structural Properties Before and After Extended Carbon Exposure |
| Author(s) |
Peyton McGuire, Erofili Kardoulaki, Ming Tang |
| On-Site Speaker (Planned) |
Peyton McGuire |
| Abstract Scope |
Mo alloy TZM has demonstrated favorable mechanical properties for use in high-temperature environments. However, carbon exposure in-service can carburize TZM and alter its mechanical properties. Ceramic coatings for TZM are considered to help strengthen the overall system, with particular emphasis being placed upon zirconium carbide (ZrC) due to its high-temperature stability and favorable mechanical properties. In this work, ZrC was coated on a TZM substrate through chemical vapor deposition. The sample was exposed to graphite for 40 days at 1000°C to test the carburization resistance the coating can offer. Samples were analyzed using nanoindentation and TEM/STEM techniques. The hardness and elastic moduli of both exposed and non-exposed coatings/substrates were analyzed and compared against literature to see whether or not the exposure to carbon had significantly affected the structural and/or mechanical properties, and if such a difference would affect the use of ZrC as a protective coating of TZM claddings. |