Stock material or miscellaneous articles – Hollow or container type article – Glass – ceramic – or sintered – fused – fired – or calcined metal...
Reexamination Certificate
2004-11-05
2009-12-29
Dye, Rena L (Department: 1794)
Stock material or miscellaneous articles
Hollow or container type article
Glass, ceramic, or sintered, fused, fired, or calcined metal...
C428S034100, C428S034400, C428S688000, C428S689000, C428S697000, C428S698000, C428S699000, C428S701000, C428S702000, C428S704000
Reexamination Certificate
active
07638178
ABSTRACT:
A protective coating for a component comprising a ceramic based substrate, and methods for protecting the component, the protective coating adapted for withstanding repeated thermal cycling. The substrate may comprise silicon nitride or silicon carbide, and the protective coating may comprise at least one tantalate of scandium, yttrium, or a rare earth element. The protective coating may further comprise one or more metal oxides. The coating protects the substrate from combustion gases in the high temperature turbine engine environment. The coating may be multi-layered and exhibits strong bonding to Si-based substrate materials and composites.
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Li Chien-Wei
Raybould Derek
Schenk Bjoern
Strangman Thomas E.
Aughenbaugh Walter B
Dye Rena L
Honeywell International , Inc.
Ingrassia Fisher & Lorenz P.C.
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