Articles
  • Slurry development for the deposition of a GdSiO4+Mullite environmental barrier coating on silicon carbide 
  • Guofeng Chena,*, Kang N Leeb and Surendra N Tewarib
  • a Shaanxi Key Laboratory of Friction Welding Technologies, Northwestern Polytechnical University, Xi'an Shaanxi 710072, P.R. China b Department of Chemical Engineering, Cleveland State University, OH 44115, USA
Abstract
In this paper, the preparation of a GdSiO4+Mullite coating by a slurry dip process is described. The slurry was optimized in terms of solid loading, solvent type and the chemical as dispersant and/or binder, and the process was determined based on the surface quality by SEM examination. The results showed that a slurry using ethanol as solvent, polyvinyl butyral (PVB) as both dispersant and binder together with a relatively high ceramic loading contributed to the successful deposition of a GdSiO4+Mullite coating on SiC.

Keywords: Environmental Barrier Coatings (EBC); slurry; SiC

This Article

  • 2007; 8(2): 142-144

    Published on Apr 30, 2007

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