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US 2009/0004503 A1Published application
Metallic alloy composition and protective coating
AssigneeUnited Technologies Corporation
InventorsMelvin Freling, Kevin W. Schlichting
Life of this patent
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Abstract
A protective coating system includes a coating having a composition that includes about 5-40 wt % of chromium, of about 5-35 wt % of aluminum, about 0.1-9 wt % of at least one of silicon, hafnium, or magnesium, about 0.05-2 wt % of a Group IIIB Periodic Table element, a non-zero amount less than 13 wt % of at least one noble metal selected from platinum, palladium, and gold, and a balance including nickel, cobalt or iron.
Claims23
A protective coating system comprising:
- a protective layer having a composition including about 5-40 wt % of chromium, about 5-35 wt % of aluminum, about 0.1-9 wt % of at least one of silicon, hafnium, or magnesium, about 0.05-2 wt % of a Group IIIB Periodic Table element, a nonzero amount less than 13 wt % of at least one noble metal selected from platinum, palladium, and gold, and a balance including at least one of nickel, cobalt, or iron.
An alloy composition comprising:
- about 5-40 wt % of chromium;
- about 5-35 wt % of aluminum;
- about 0.1-9 wt % of at least one of silicon, hafnium, or magnesium;
- about 0.05-2 wt % of a Group IIIB Periodic Table element;
- a nonzero amount less than 13 wt % of at least one noble metal selected from platinum, palladium, and gold;
- and
- a balance including at least one of nickel, cobalt, or iron.
4 more elements
A method of manufacturing a protective coating system, comprising:
- forming a protective layer having a composition including about 5-40 wt % of chromium, about 5-35 wt % of aluminum, about 0.1-9 wt % of at least one of silicon, hafnium, or magnesium, about 0.05-2 wt % of a Group IIIB Periodic Table element, a nonzero amount less than 13 wt % of at least one noble metal selected from platinum, palladium, and gold, and a balance including at least one of nickel, cobalt, or iron.
Dependencies are inferred from the claim text.