Method for a defined surface treatment of a first carbon coating applied on a surface of a component

Patent metadata

Field	Value
Publication number	US-10633735-B2
Application number	US-201615557278-A
Country	US
Kind code	B2
Filing date	Mar 10, 2016
Priority date	Mar 11, 2015
Publication date	Apr 28, 2020
Grant date	Apr 28, 2020

Abstract

A method for a defined surface treatment of a first carbon coating applied to a surface of a component The first carbon coating is brought into touching contact with at least one second carbon coating that is formed on a surface of a tool or second component and the two carbon coatings are moved relatively with one another so that the first carbon coating is smoothed by the second carbon coating. The first carbon coating and/or the second carbon coating are formed from a-C (amorphous carbon) or ta-C (tetrahedrally bonded amorphous carbon).

First claim

The invention claimed is:

1. A method for a defined surface treatment of a first carbon coating applied to a surface of a first component, in which the first carbon coating is brought into touching contact with at least one second carbon coating that is formed on a surface of a second component and the first and second carbon coatings are moved relatively to one another so that the first and second carbon coatings are smoothed by the relative movement of each other, wherein the first carbon coating and/or the second carbon coating is/are formed from a-C (amorphous carbon) or ta-C (tetrahedrally bonded amorphous carbon).

2. A method in accordance with claim 1 , characterized in that said first carbon coating and said second carbon coating of a hard carbon having a hardness of at least 2000 HV are used.

3. A method in accordance with claim 1 , characterized in that a hardness of the first carbon coating is different from a hardness of the second carbon coating and/or differs from the hardness of the second carbon coating by a maximum of ten percent, or by a maximum of five percent or by a maximum of two percent.

4. A method in accordance with claim 1 , characterized in that said first carbon coating and said second carbon coating are moved relative to one another only linearly in one direction, in a linearly oscillating manner, in a rotating manner or in a chaotic movement.

5. A method in accordance with claim 1 , characterized in that a contact pressure is used of between 0.5 N/mm 2 and 500 N/mm 2 , or between 1 N/mm 2 and 100 N/mm 2 .

6. A method in accordance with claim 1 , characterized in that said first carbon coating and/or said second carbon coating is/are deposited on said first and second components by a vacuum arc deposition method.

7. A method in accordance with claim 1 , characterized in that said first carbon coating is smoothed at an environmental temperature between 18° C. and 25° C.

8. A method in accordance with claim 1 , characterized in that said first carbon coating ( 1 ) and said second carbon coating are only smoothed by the relative movement relative to one another; or in that an iron powder for supporting the smoothing is applied to the first carbon coating and/or to the second carbon coating.

9. A method in accordance with claim 1 , characterized in that at least said first component is cleaned of particles deposited during the smoothing by a fluid during and/or after the smoothing.

10. A method in accordance with claim 1 , characterized in that said first and second components are introduced into a bulk of a plurality of components and are moved together within the bulk of components.

11. A method in accordance with claim 1 wherein said first and second carbon coatings are moved relatively in parallel to one another.

12. A method for a defined surface treatment of carbon coatings applied to surfaces of a plurality of components, in which a carbon coating applied to at least one component is brought into touching contact with a carbon coating formed on a surface of at least another component, of said plurality of components and the touching carbon coatings are moved relatively to one another so that the carbon coatings are smoothed by each other, wherein the carbon coatings are formed from a-C (amorphous carbon) and ta-C (tetrahedrally bonded amorphous carbon).

13. A method in accordance with claim 12 , characterized in that the carbon coatings are only smoothed by the relative movement relative to one another.

Assignees

• Fraunhofer Ges Forschung

Inventors

• Weihnacht Volker
• Leson Andreas

Classifications

• C23C14/0605 Primary

  Carbon · CPC title

• C23C14/588

  by mechanical treatment · CPC title