|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Materials in Clean Power Systems IX: Durability of Materials
||Electrodeposition of MCrAlY and Pt-Modified MCrAlY Coatings for Gas-Turbine Engine Applications
||Jason Witman, Brian Bates, Ying Zhang, Sebastien Dryepondt, Bruce Pint
|On-Site Speaker (Planned)
NiCoCrAlY coatings were synthesized by electrolytic codeposition of CrAlY-based particles with an Ni-Co matrix, followed by a diffusion heat treatment at elevated temperatures. To improve the high-temperature oxidation/corrosion performance, Pt-modified NiCoCrAlY coatings were also made via the electrolytic approach by electroplating a thin layer of Pt (~7 μm) on top of the composite layer, followed by a similar diffusion treatment. The effects of codeposition parameters on the quality of the (Ni,Co)-CrAlY composite coating were investigated, including the concentration of CrAlY powder in the solution, current density, agitation rate, etc. The influence of post-deposition heat-treating temperature and environment (vacuum vs. argon) on the formation and microstructure of the MCrAlY coatings was also studied. Coating oxidation performance is being evaluated in both dry and wet air environments.
||Planned: A print-only volume