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US-2024392684-A1 · Nov 28, 2024 · US
Barrier layer for a turbocharger
US10001021B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10001021-B2 |
| Application number | US-201414893478-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 22, 2014 |
| Priority date | May 23, 2013 |
| Publication date | Jun 19, 2018 |
| Grant date | Jun 19, 2018 |
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- Title
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Abstract
Official abstract text for this publication.
A system, in particular a turbocharger with a barrier layer for protecting against high temperature corrosion of parts and/or components of the system or turbocharger that are subjected to high temperatures, where the barrier layer includes at least one Cr—Al—O layer.
First claim
Opening claim text (preview).
The invention claimed is: 1. A PVD-coated part or a PVD-coated component of a turbocharger, comprising: a PVD-coated substrate having an oxidation- and chemical barrier layer that includes at least one Al—Cr—O layer, which at least partially has a corundum structure and shows at least reflections of a crystal structure of an AlCr intermetallic phase in an X-ray diffraction diagram, and wherein the substrate is a part or component of a turbocharger that is subjected to temperatures greater than 400° C., but not greater than 800° C., during operation of the turbocharger, and wherein a crystallite size of an oxide in the Al—Cr—O layer is so small that oxide crystallites can no longer be detected with XRD and as a result, no oxide phase can be detected in the X-ray diffraction diagram. 2. The PVD-coated part or the PVD-coated component of a turbocharger according to claim 1 , wherein the barrier layer includes a chromium nitride layer, which is situated between the substrate and the Al—Cr—O layer. 3. The PVD-coated part or the PVD-coated component of a turbocharger according to claim 1 , wherein the chemical composition of the Al—Cr—O layer produces a composition of (Al,Cr) 2 O 3-y where y≤0.3. 4. The PVD-coated part or the PVD-coated component of a turbocharger according to claim 1 , wherein the X-ray diffraction diagram shows the reflections of an (Al,Cr) 2 O 3 layer in a corundum structure. 5. The PVD-coated part or the PVD-coated component of a turbocharger according to claim 1 , wherein the X-ray diffraction diagram shows the reflections of a crystal structure of an AlCr intermetallic phase.
Assignees
Inventors
Classifications
Electric arc evaporation · CPC title
in turbochargers · CPC title
Oxides (C23C14/10 takes precedence) · CPC title
- F01D5/288Primary
Protective coatings for blades · CPC title
Engines with reciprocating-piston pumps; Engines with crankcase pumps · CPC title
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- What does patent US10001021B2 cover?
- A system, in particular a turbocharger with a barrier layer for protecting against high temperature corrosion of parts and/or components of the system or turbocharger that are subjected to high temperatures, where the barrier layer includes at least one Cr—Al—O layer.
- Who is the assignee on this patent?
- Oerlikon Surface Solutions Ag Truebbach, Oerlikon Surface Solutions Ag Pfaeffikon
- What technology area does this patent fall under?
- Primary CPC classification F01D5/288. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jun 19 2018 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).