Thermal barrier coating, turbine member, gas turbine, and method for producing thermal barrier coating
US-2021054492-A1 · Feb 25, 2021 · US
Environmental barrier coating and method of making the same
US12565706B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12565706-B2 |
| Application number | US-202318229338-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 2, 2023 |
| Priority date | Aug 2, 2022 |
| Publication date | Mar 3, 2026 |
| Grant date | Mar 3, 2026 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A method of applying a top coat to an article according to an exemplary embodiment of this disclosure, among other possible things includes applying a first feedstock comprising particles of oxide-based material having diameters between about 1 and about 80 microns via a thermal spray process to form a first top coat layer on an article having a bond coat and applying a second feedstock comprising particles of oxide-based material having diameters between about 15 and about 60 microns via the thermal spray process to form a second top coat layer on the first top coat layer. An article and a barrier layer for an article are also disclosed.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method of applying a top coat to an article comprising: applying a first feedstock comprising particles of oxide-based material having diameters between about 1 and about 80 microns via a thermal spray process to form a first top coat layer on an article having a bond coat; and applying a second feedstock comprising particles of oxide-based material having diameters between about 15 and about 60 microns via the thermal spray process to form a second top coat layer on the first top coat layer, wherein the first top coat layer has a higher porosity than the second top coat layer. 2 . The method of claim 1 , wherein the particles of oxide-based material include particles of at least one of hafnia, hafnium silicates, yttrium silicates, ytterbium silicates, other rare earth silicates or combinations of rare earth silicates, calcium aluminosilicates, mullite, barium strontium aluminosilicate, strontium aluminosilicate. 3 . The method of claim 1 , wherein the thermal spray process is one of air plasma spray, a suspension deposition process, and electrophoretic deposition (EPD). 4 . The method of claim 1 , wherein the second top coat layer is performed without moving the article after the step of applying the first top coat layer. 5 . The method of claim 1 , further comprising curing or sintering the first and second top coat layers. 6 . The method of claim 1 , wherein a surface roughness of the second top coat layer is less than about 6 microns (150 microinches). 7 . The method of claim 1 , wherein the particles in the first feedstock have diameters between about 10 and about 70 microns. 8 . The method of claim 1 , wherein the particles in the second feedstock have diameters between about 20 and about 50 microns. 9 . The method of claim 1 , wherein the particles of oxide-based material include particles of hafnium silicates. 10 . The method of claim 1 , wherein the particles of oxide-based material include particles of yttrium silicates. 11 . The method of claim 1 , wherein the particles of oxide-based material include particles of ytterbium silicates. 12 . The method of claim 1 , wherein the particles of oxide-based material include particles of calcium aluminosilicates. 13 . The method of claim 1 , wherein the particles of oxide-based material include particles of strontium aluminosilicate. 14 . The method of claim 1 , wherein the first top coat layer is between about 1.5 and 2.5 times the thickness of the second top coat layer.
Assignees
Inventors
Classifications
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US12565706B2 cover?
- A method of applying a top coat to an article according to an exemplary embodiment of this disclosure, among other possible things includes applying a first feedstock comprising particles of oxide-based material having diameters between about 1 and about 80 microns via a thermal spray process to form a first top coat layer on an article having a bond coat and applying a second feedstock compris…
- Who is the assignee on this patent?
- Rtx Corp
- What technology area does this patent fall under?
- Primary CPC classification C23C4/11. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 03 2026 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).