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Method of determining the appearance of losses of cohesion in a transparent ceramic coating layer formed on a substrate
US9599568B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9599568-B2 |
| Application number | US-201214238006-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 7, 2012 |
| Priority date | Aug 10, 2011 |
| Publication date | Mar 21, 2017 |
| Grant date | Mar 21, 2017 |
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Abstract
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A method of determining the appearance of losses of cohesion in a transparent ceramic coating layer ( 16 ) formed on a substrate ( 10 ), the method comprising the steps that consist firstly in looking for an image representative of a separation zone, if any, between the ceramic layer and the substrate, and secondly in analyzing the detected image, if any, with the image being viewed optically at particular wavelengths that are greater than or equal to 500 nm.
First claim
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The invention claimed is: 1. A method of determining appearance of loss of cohesion in a transparent ceramic coating layer on a substrate, the method comprising: detecting an image representative of a separation zone between the transparent ceramic coating layer and the substrate; and analyzing the image by viewing the image optically at particular wavelengths of longer than or equal to 500 nm, in order to determine the loss of cohesion in the transparent ceramic coating layer on the substrate, wherein: the transparent ceramic coating layer is subjected to white lighting; and the image is captured by a camera. 2. The method according to claim 1 , wherein the transparent ceramic coating layer comprises zirconia obtained by a plasma deposition process, and the particular wavelengths are longer than or equal to 600 nm. 3. The method according to claim 1 , wherein the transparent ceramic coating layer comprises zirconia obtained by an EBPVD deposition process. 4. The method according to claim 1 , wherein the transparent ceramic coating layer is subjected to the white lighting, and the image is captured by a camera with a filter at the particular wavelengths being interposed between the camera and the substrate. 5. The method according to claim 1 , wherein the transparent ceramic coating layer is subjected to the white lighting, and the image is captured by a camera having optical sensors adjusted to the particular wavelengths.
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Classifications
- G01N21/8422Primary
Investigating thin films, e.g. matrix isolation method · CPC title
Industrial image inspection · CPC title
Measuring adhesive force between materials, e.g. of sealing tape, of coating · CPC title
Coatings · CPC title
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- What does patent US9599568B2 cover?
- A method of determining the appearance of losses of cohesion in a transparent ceramic coating layer ( 16 ) formed on a substrate ( 10 ), the method comprising the steps that consist firstly in looking for an image representative of a separation zone, if any, between the ceramic layer and the substrate, and secondly in analyzing the detected image, if any, with the image being viewed optically a…
- Who is the assignee on this patent?
- Fabre Gregory, Guedou Jean-Yves, Guipont Vincent, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification G01N21/8422. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 21 2017 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).