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US 11,655,544 B2Granted
PVD barrier coating for superalloy substrates
AssigneeOerlikon Surface Solutions AG, PfäFfikon
InventorsJürgen Ramm, Beno Widrig, Malko Gindrat
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Abstract
A layered stack that can be used as an oxidation and chemical barrier with superalloy substrates, including Ni, Ni—Co, Co, and Ni-aluminide based substrates, and methods of preparing the layered stack. The layer system can be applied to a substrate in a single physical vapor deposition process with no interruption of vacuum conditions.
Claims8
A multilayered structure comprising:
- a. a metallic substrate;
- and
- b. a multilayer coating disposed on the metallic substrate comprising:
- i. a discrete first layer disposed on the metallic substrate, the discrete first layer comprising a Ni-, Co-, Ni—Co-, or Ni-aluminide based material;
- ii. a discrete second layer disposed on the discrete first layer, the discrete second layer comprising Al, Cr, O, and further comprising a Ni-, Co-, Ni—Co, or Ni-aluminide based material;
- and
- iii. a discrete third layer disposed on the discrete second layer, the discrete third layer comprising Al, Cr, and O.
4 more elements
Dependencies are inferred from the claim text.