|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Materials and Fuels for the Current and Advanced Nuclear Reactors V
||AA-4: Formation of Silicide Coatings on Refractory Alloy Substrates for Accident Resistant Nuclear Fuel Cladding
||Woojin Lim, Faris Sweidan, Hojin Ryu
|On-Site Speaker (Planned)
Refractory alloys based on Mo or Nb are considered potential cladding material candidates for accident resistant nuclear fuel due to their high melting temperature and high strength at elevated temperature. However, those refractory alloys are prone to get oxidized at elevated temperatures. To enhance the oxidation resistance of refractory alloy cladding, silicide layers have been coated on refractory alloy cladding substrates by using the pack cementation diffusion coating method. Silicon powder and refractory alloys were packed and annealed in a vacuum atmosphere. The silicide phases in the coating layers were characterized by X-ray diffraction. The microstructures and chemical compositions of silicide coating layers were observed by scanning electron microscopy and energy dispersive spectroscopy. The oxidation resistance of silicide coating layers at elevated temperatures were measured and compared with the refractory alloys without silicide coating.
||Planned: A print-only volume