# US 8,541,115 B2 · Oxide coating foundation for promoting TBC adherence

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- Number: US 8,541,115 B2
- Document ID: US8541115B2
- Status: Granted
- Kind: B2
- Application number: 12/362,776
- Filed: 2009-01-30
- Published: 2010-08-05
- Granted: 2013-09-24
- Earliest claimed: 2009-01-30
- Assignees: United Technologies Corporation
- Applicants: Brian S. Tryon; Joseph Parkos
- Inventors: Brian S. Tryon; Joseph Parkos
- Web page: https://patentgrep.com/patent/US8541115B2

## CPC

- C23C 28/321: {with at least one metal alloy layer}
- C23C 14/025: {Metallic sublayers}
- C23C 28/02: only coatings {only including layers} of metallic material
- C23C 28/04: only coatings of inorganic non-metallic material
- C23C 28/322: {only coatings of metal elements only}
- C23C 28/345: {with at least one oxide layer}
- C23C 28/3455: {with a refractory ceramic layer, e.g. refractory metal oxide, ZrO2, rare earth oxides or a thermal barrier system comprising at least one refractory oxide layer}
- Y10T 428/31678: Of metal
- C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A coating system for a turbine engine component has a substrate, a masking layer on a surface of the substrate, which masking layer comprises a homogeneous layer of a single metal, a non-thermally grown oxide layer deposited on the masking layer, and a thermal barrier coating deposited on the oxide layer.

## Claims

### Claim 1

A coating system for a turbine engine component, said coating system comprises a substrate, a masking layer on a surface of the substrate, said masking layer comprising a homogeneous layer of a single metal, a non-thermally grown oxide layer deposited on and in contact with the masking layer, said non-thermally grown oxide layer comprising one of alumina and titania, and a thermal barrier coating deposited on said oxide layer, wherein said masking layer comprises a layer of pure aluminum.

### Claim 2 (depends on 1)

The coating system of claim 1, wherein said oxide layer comprises a layer of alumina.

### Claim 3 (depends on 1)

The coating system of claim 1, wherein said oxide layer comprises a layer of titania.

### Claim 4 (depends on 1)

The coating system of claim 1, wherein said substrate is one of a turbine blade and a vane.

### Claim 5 (depends on 1)

The coating system of claim 1, wherein said substrate is a combustor panel.