Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2006-12-19
2006-12-19
McNeil, Jennifer C. (Department: 1775)
Stock material or miscellaneous articles
Composite
Of inorganic material
C416S24100B, C416S24100B, C428S688000, C428S689000
Reexamination Certificate
active
07150926
ABSTRACT:
A thermal barrier coating for a gas turbine component includes a bond coating layer, at least a first segmented columnar ceramic layer on the bond coating layer, and a particulate structure-stabilizing material disposed within a plurality of segmentation gaps within the columnar ceramic layer(s). The thermal barrier coating may further comprise, a second segmented columnar ceramic layer of yttria stabilized hafnia on the first segmented columnar ceramic layer, and an outer, continuous, non-segmented sealant layer covering the yttria stabilized hafnia layer to prevent ingress of extraneous materials into the segmentation gaps. Methods for depositing a thermal barrier coating on a substrate are also disclosed.
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Honeywell International , Inc.
Ingrassia Fisher & Lorenz
Ivey Elizabeth D.
McNeil Jennifer C.
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