|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Materials and Fuels for the Current and Advanced Nuclear Reactors V
||Deposition of Compatibility Films on SiC for Environmental Barrier Coatings
||Caen Ang, Jim Kiggans, Craig Kemery, Jeffery Thomson, Yutai Katoh, Kurt Terrani
|On-Site Speaker (Planned)
SiC composites are continuing to undergo evaluation with the Advanced Fuels Campaign but one key challenge is the corrosion response of SiC in LWR chemistry. Chromium-based EBCs are being investigated in order to overcome the challenges of deposition, cost and adhesion to SiC. Electrochemical/electrolytic techniques are presented to show the viability of a suitable compatibility coating between chromium and SiC. The low cost, scalability and extensive history of the high performance chrome industry make electrochemical techniques attractive. Chromium-based EBCs have demonstrated feasibility as micron-thick coatings on cladding but have several key processing and performance hurdles. Control of the composition of the interphase between Cr and SiC becomes critical for minimizing coefficient of thermal expansion mismatches and compensating for Type I-III microcracking that places a practical limit on thickness. Three compatibility coatings have been developed and are currently undergoing thermal stress tests.
||Planned: A print-only volume