Amorphous hydrocarbon based film, and sliding member and sliding system provided with said film
US-2018023016-A1 · Jan 25, 2018 · US
Sliding member with carbon transfer layer
US11261517B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11261517-B2 |
| Application number | US-201916665581-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 28, 2019 |
| Priority date | Nov 6, 2018 |
| Publication date | Mar 1, 2022 |
| Grant date | Mar 1, 2022 |
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- Title
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Abstract
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A sliding member includes a carbon transfer layer and can superiorly effectively decrease friction and reduce wear. A method produces the sliding member. The sliding member includes a substrate and a carbon transfer layer. The carbon transfer layer is disposed on the surface of the substrate and includes both sp 2 bonded carbon and sp 3 bonded carbon. The carbon transfer layer preferably has a ratio sp 3 /(sp 2 +sp 3 ) of the sp 3 bonded carbon to the totality of the sp 2 bonded carbon and the sp 3 bonded carbon of 0.1 or more.
First claim
Opening claim text (preview).
The invention claimed is: 1. A sliding member comprising: a substrate; and a carbon transfer layer being disposed on a surface of the substrate and including sp 2 bonded carbon, sp 3 bonded carbon, and iron and giving a G band appearing at 1570 to 1640 cm −1 in a Raman spectrum obtained by Raman spectroscopic analysis using a 532-nm measurement light source. 2. The sliding member according to claim 1 , wherein the carbon transfer layer has a ratio sp 3 /(sp 2 +sp 3 ) of 0.1 or more, where the ratio sp 3 /(sp 2 +sp 3 ) is a ratio of the sp 3 bonded carbon to the totality of the sp 2 bonded carbon and the sp 3 bonded carbon. 3. The sliding member according to claim 1 , wherein the carbon transfer layer gives a D band appearing at 1300 to 1400 cm −1 in a Raman spectrum obtained by Raman spectroscopic analysis using a 532-nm measurement light source. 4. The sliding member according to claim 1 , wherein the carbon transfer layer has a thickness of 100 to 1000 nm. 5. The sliding member according to claim 1 , wherein the carbon transfer layer has a ratio sp 3 /(sp 2 +sp 3 ) of 0.5 or more, where the ratio sp 3 /(sp 2 +sp 3 ) is a ratio of the sp 3 bonded carbon to the totality of the sp 2 bonded carbon and the sp 3 bonded carbon. 6. The sliding member according to claim 3 , wherein the carbon transfer layer has a ratio sp 3 /(sp 2 +sp 3 ) of 0.5 or more, where the ratio sp 3 /(sp 2 +sp 3 ) is a ratio of the sp 3 bonded carbon to the totality of the sp 2 bonded carbon and the sp 3 bonded carbon. 7. The sliding member according to claim 1 , wherein the carbon transfer layer has a ratio sp 3 /(sp 2 +sp 3 ) of 0.5 or more and less than 0.98, where the ratio sp 3 /(sp 2 +sp 3 ) is a ratio of the sp 3 bonded carbon to the totality of the sp 2 bonded carbon and the sp 3 bonded carbon. 8. The sliding member according to claim 3 , wherein the carbon transfer layer has a ratio sp 3 /(sp 2 +sp 3 ) of 0.5 or more and less than 0.98, where the ratio sp 3 /(sp 2 +sp 3 ) is a ratio of the sp 3 bonded carbon to the totality of the sp 2 bonded carbon and the sp 3 bonded carbon. 9. The sliding member according to claim 1 , wherein the carbon transfer layer has a thickness of 300 to 600 nm. 10. The sliding member according to claim 5 , wherein the carbon transfer layer has a thickness of 100 to 1000 nm. 11. The sliding member according to claim 7 , wherein the carbon transfer layer has a thickness of 100 to 1000 nm. 12. The sliding member according to claim 8 , wherein the carbon transfer layer has a thickness of 100 to 1000 nm. 13. The sliding member according to claim 5 , wherein the carbon transfer layer has a thickness of 300 to 600 nm. 14. The sliding member according to claim 7 , wherein the carbon transfer layer has a thickness of 300 to 600 nm. 15. The sliding member according to claim 8 , wherein the carbon transfer layer has a thickness of 300 to 600 nm. 16. The sliding member according to claim 3 , wherein an intensity of the D band is greater than an intensity of the G band.
Assignees
Inventors
Classifications
Carbon based material · CPC title
Deposition of carbon only · CPC title
Sliding surface consisting mainly of ceramics, cermets or hard carbon, e.g. diamond like carbon [DLC] · CPC title
Carbon; Graphite; Carbon black · CPC title
Particle morphology · CPC title
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- What does patent US11261517B2 cover?
- A sliding member includes a carbon transfer layer and can superiorly effectively decrease friction and reduce wear. A method produces the sliding member. The sliding member includes a substrate and a carbon transfer layer. The carbon transfer layer is disposed on the surface of the substrate and includes both sp 2 bonded carbon and sp 3 bonded carbon. The carbon transfer layer preferably has …
- Who is the assignee on this patent?
- Daicel Corp, Univ Tohoku
- What technology area does this patent fall under?
- Primary CPC classification C23C14/16. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 01 2022 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).