High-temperature coatings with pt metal modified gamma-ni+gamma'-ni3al alloy compositions
AssigneeIowa State University Research Foundation, Inc.
InventorsBrian Gleeson, Daniel Sordelet, Wen Wang
Life of this patent
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Abstract
An alloy including a Pt-group metal, Ni and Al in relative concentration to provide a γ-Ni+γ′-Ni3Al phase constitution, and a coating including the alloy.
Claims40
1-63. (canceled)
A coating on a substrate, wherein the coating is an alloy which comprises:
- aluminum,
- nickel,
- at least one platinum group metal,
- one or more of Cr, Ta and Co, and
- about 0.5 at % to about 2 at % hafnium,
- wherein the alloy consists essentially of gamma prime Ni3Al phase and either beta NiAl phase or gamma Ni phase.
A coating on a substrate, wherein the coating is an alloy which comprises:
- up to about 23 at % aluminum,
- nickel,
- at least one platinum group metal,
- chromium, and
- about 0.5 at % to about 2 at % hafnium,
- wherein
- the alloy consists essentially of gamma prime Ni3Al phase and either beta NiAl phase or gamma Ni phase, and
- the gamma prime Ni3Al phase is the predominant phase.
A coating on a substrate, wherein the coating is an alloy which comprises:
- aluminum,
- nickel,
- at least one platinum group metal,
- one or more of Cr, Ta and Co, and
- about 0.5 at % to about 2 at % hafnium,
- wherein the alloy comprises gamma prime Ni3Al phase and either beta NiAl phase or gamma Ni phase.
A coating on a substrate, wherein the coating is an alloy which comprises:
- up to about 23 at % aluminum,
- nickel,
- at least one platinum group metal,
- chromium, and
- about 0.5 at % to about 2 at % hafnium,
- wherein
- the alloy comprises gamma prime Ni3Al phase and either beta NiAl phase or gamma Ni phase, and
- the gamma prime Ni3Al phase is the predominant phase.
A coating on a substrate, wherein the coating is an alloy which comprises:
- aluminum,
- nickel,
- at least one platinum group metal,
- one or more of Cr, Ta and Co, and
- about 0.5 at % to about 2 at % hafnium,
- wherein the alloy consists essentially of gamma prime Ni3Al phase and either beta NiAl phase or gamma Ni phase.
A coating on a substrate, wherein the coating is an alloy which comprises:
- aluminum,
- nickel,
- at least one platinum group metal,
- one or more of Cr, Ta and Co, and
- about 0.5 at % to about 2 at % hafnium,
- wherein the alloy is predominantly gamma prime Ni3Al phase and also contains either beta NiAl phase or gamma Ni phase.
A coating on a substrate, wherein the coating is an alloy which comprises:
- aluminum,
- nickel,
- at least one platinum group metal,
- one or more of Cr, Ta and Co, and
- about 0.5 at % to about 2 at % hafnium,
- the alloy has predominantly gamma nickel and gamma prime Ni3Al phase constitution and also contains beta NiAl phase.
Dependencies are inferred from the claim text.