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US 2004/0170521 A1Published application
Protective coating
AssigneeSiemens Aktiengesellschaft
InventorWerner Stamm
Life of this patent
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Abstract
Protective coatings known in the state of art can reveal either good corrosion resistance or good mechanical properties. An inventive protective coating resistant to corrosion at medium and high temperatures essentially consisting of the following elements (in percent by weight): 26 to 30% nickel, 20 to 28% chromium, 8 to 12% aluminium, 0.1 to 3% of at least one reactive element of the rare earths, cobalt balanced, reveals good corrosion resistance combined with good mechanical properties.
Claims13
A protective coating
- resistant to oxidation
- applied on a component,
- formed of a nickel-based or cobalt-based superalloy, the protective coating consisting essentially of the following elements (in percent by weight):
- 26% to 30% nickel,
- 20% to 28% chromium,
- 0.1% to 3% rare earth element,
- 8% to 12% aluminium,
- 0.1% to 3% rhenium,
- balance cobalt.
6 more elements
Dependencies are inferred from the claim text.