Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2007-12-11
2007-12-11
Lam, Cathy F. (Department: 1775)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S307300, C428S432000, C428S621000, C428S632000, C428S689000
Reexamination Certificate
active
10909026
ABSTRACT:
A layered structure includes a substrate comprising a layer of an oxide/oxide ceramic based composite material, a first oxide layer disposed directly on the substrate and formed from a material that has no greater than about 10% porosity and is substantially impermeable by water vapor, and a second oxide layer disposed directly on the first oxide layer and having a greater porosity than the first oxide layer. Either or both the first and second oxide layers of the coating system may be deposited using a plasma spraying process, a slurry deposition process which is followed by a sintering step, or an EB-PVD process.
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Schenk Bjoern
Strangman Thomas E.
Yankowich Paul R.
Honeywell International , Inc.
Ingrassia Fisher & Lorenz
Lam Cathy F.
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