Superalloy target
US-11866805-B2 · Jan 9, 2024 · US
Coated turbomachine part having a nickel-based substrate comprising hafnium
US2023065064A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2023065064-A1 |
| Application number | US-202117797947-A |
| Country | US |
| Kind code | A1 |
| Filing date | Feb 1, 2021 |
| Priority date | Feb 6, 2020 |
| Publication date | Mar 2, 2023 |
| Grant date | — |
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Abstract
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A turbomachine part includes (i) a nickel-based superalloy substrate including, in mass content, 5.0% to 8.0% cobalt, 6.5% to 10% chromium, 0.5% to 2.5% molybdenum, 5.0% to 9.0% tungsten, 6.0% to 9.0% tantalum, 4.5% to 5.8% aluminum, hafnium in a mass content greater than or equal to 2000 ppm, and optionally including niobium in a mass content less than or equal to 1.5%, and optionally at least one of carbon, zirconium and boron each in a mass content less than or equal to 100 ppm, the remainder being composed of nickel and unavoidable impurities; and (ii) a β-structured nickel aluminide coating covering the substrate.
First claim
Opening claim text (preview).
1 . A turbomachine part comprising: (i) a nickel-based superalloy substrate comprising, in mass content, 5.0% to 8.0% cobalt, 6.5% to 10% chromium, 0.5% to 2.5% molybdenum, 5.0% to 9.0% tungsten, 6.0% to 9.0% tantalum, 4.5% to 5.8% aluminum, hafnium in a mass content greater than or equal to 2000 ppm, and optionally comprising niobium in a mass content less than or equal to 1.5%, and optionally at least one of carbon, zirconium and boron each in a mass content less than or equal to 100 ppm, the remainder being composed of nickel and unavoidable impurities; and (ii) a β-structured nickel aluminide coating covering the substrate. 2 . The turbomachine part according to claim 1 , wherein the hafnium mass content in the substrate is greater than or equal to 4000 ppm. 3 . The turbomachine part according to claim 2 , wherein the hafnium mass content in the substrate is greater than or equal to 6000 ppm. 4 . The turbomachine part according to claim 1 , further comprising a thermal barrier present on the β-structured nickel aluminide coating. 5 . The turbomachine part according to claim 1 , wherein the β-structured nickel aluminide coating is a β-structured NiAl coating or β-structured NiPtAl coating. 6 . The turbomachine part according to claim 1 , wherein the superalloy is monocrystalline. 7 . The turbomachine part according to claim 1 , wherein said part is a turbomachine distributor or a turbomachine distributor sector. 8 . A turbomachine comprising a turbomachine part according to claim 1 .
Assignees
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Classifications
Coating; Surface treatment · CPC title
for aircraft propulsion, e.g. jet engines · CPC title
Alloys · CPC title
with the maximum Cr content being less 10% · CPC title
Coatings combining at least one metallic layer and at least one inorganic non-metallic layer · CPC title
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- What does patent US2023065064A1 cover?
- A turbomachine part includes (i) a nickel-based superalloy substrate including, in mass content, 5.0% to 8.0% cobalt, 6.5% to 10% chromium, 0.5% to 2.5% molybdenum, 5.0% to 9.0% tungsten, 6.0% to 9.0% tantalum, 4.5% to 5.8% aluminum, hafnium in a mass content greater than or equal to 2000 ppm, and optionally including niobium in a mass content less than or equal to 1.5%, and optionally at least…
- Who is the assignee on this patent?
- Safran Aircraft Engines, Safran, Centre Nat Rech Scient, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification F01D5/28. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Mar 02 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).