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US 12,359,586 B2Granted
Dislocator chemistries for turbine abradable or machinable coating systems
AssigneeRtx Corporation
InventorsWilliam J. Joost, Kara J. Bridges, Christopher W. Strock, Imelda P. Smyth, Richard Wesley Jackson
Life of this patent
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Abstract
A coated article (20;60) includes a substrate (22) and a coating (24;62) on the substrate. The coating includes at least a first layer (30). The first layer has: a matrix (50); and a filler (52) at 2.0% to 40% by volume in the first layer. The first layer is selected from alkaline earth or transition metal (M) tungstates (MWO4); alkaline earth molybdates (MMoO4); rare earth (RE) phosphates (REPO4); and combinations thereof.
Claims19
A coated article being a blade outer air seal comprising:
- a substrate having a concave inner diameter (ID) surface;
- and
- a coating on the substrate ID surface including at least a first layer,
- wherein the first layer comprises:
- a matrix;
- and
- a filler at 2.0% to 40% by volume in the first layer selected from:
- alkaline earth or transition metal tungstates;
- alkaline earth molybdates;
- rare earth phosphates;
- and
- combinations thereof,
- wherein the filler comprises at 5.0% to 30% by volume in the first layer one or a combination of:
- CaWO4;
- BaWO4;
- BaMoO4;
- and
- SrMoO4.
15 more elements
A coated article being a blade outer air seal comprising:
- a substrate having a concave inner diameter (ID) surface;
- and
- a coating on the substrate ID surface including at least a bond coat and a first layer,
- wherein:
- the bond coat comprises a SiOC-BMAS mixture;
- and
- the first layer comprises:
- a matrix;
- and
- a filler at 2.0% to 40% by volume in the first layer selected from:
- alkaline earth or transition metal tungstates;
- alkaline earth molybdates;
- rare earth phosphates;
- and
- combinations thereof.
12 more elements
Dependencies are inferred from the claim text.