Coating, coating layer system, coated superalloy component
AssigneeSiemens Aktiengesellschaft
InventorXin-Hai Li
Life of this patent
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Abstract
Coatings as may be used in a gas turbine are provided. A nickel based coating may include 15 to 40 wt % cobalt, 10 to 25 wt % chromium, 5 to 15 wt % aluminum, 0.05 to 1 wt % yttrium and/or at least one of elements from lanthanum series, 0.05 to 8 wt % ruthenium or iron, 0 to 1 wt % iridium, 0.05 to 5 wt % molybdenum, 0 to 3 wt % silicon, 0 to 5 wt % tantalum, 0 to 2 wt % hafnium, unavoidable impurities, and a balance of nickel. A cobalt based coating may include 15 to 40 wt % nickel, 15 to 28 wt % chromium, 5 to 15 wt % aluminum, 0.05 to 1 wt % yttrium and/or at least one of elements from lanthanum series, 0.05 to 5 wt % ruthenium and/or molybdenum, 0 to 2 wt % iridium, 0 to 3 wt % silicon, 0 to 5 wt % tantalum, hafnium, unavoidable impurities, and a balance of cobalt.
Claims12
A nickel based coating consisting of:
- 15 to 40
- weight percent of
- cobalt,
- 10 to 23
- weight percent of
- chromium,
- 5 to 15
- weight percent of
- aluminum,
- 0.05 to 1
- combined weight
- yttrium and/or at least one of
- percent of
- elements from lanthanum series,
- 0.05 to 5
- weight percent of
- ruthenium,
- 0 to 2
- weight percent of
- iridium,
- 0.05 to 5
- weight percent of
- molybdenum,
- 0 to 3
- weight percent of
- silicon,
- 0 to 20
- weight percent of
- iron
- 0 to 5
- weight percent of
- tantalum,
- 0 to 2
- weight percent of
- hafnium,
- all percentages relative to a total weight of the coating,
- and unavoidable impurities,
- and a balance of nickel.
Dependencies are inferred from the claim text.