COMPONENT

Abstract

A component (1) is disclosed which has a black oxide layer (10), wherein metallic additive elements (4) are incorporated in the structure of the black oxide layer (10). Furthermore, a method for manufacturing such a component (1) is disclosed, said method comprising the steps of: depositing metallic additive elements (4) on the component (1) and immersing the component (1) with the deposited metallic additive elements (4) in a black oxide solution (6), wherein the metallic additive elements (4) are incorporated into the structure of the black oxide layer (10).

Claims

1. A component which has a black oxide layer, wherein metallic additive elements are incorporated in the structure of the black oxide layer.

2. The component according to claim 1, wherein the metallic additive elements are provided with a percentage between 0.1 and 1 of the black oxide layer.

3. The component according to claim 1, wherein the metallic additive elements are incorporated in the black oxide layer with a percentage increasing radially outwards.

4. The component according to claim 1, wherein the metallic additive elements are configured to adapt the properties of the black oxide layer.

5. The component according to claim 1, wherein the metallic additive elements comprise titanium.

6. The component according to claim 1, wherein the metallic additive elements comprise a metal oxide.

7. The component according to claim 1, wherein the black oxide layer is arranged on an area of the component being free of a rolling contact.

8. A method of manufacturing a component, the component having a black oxide layer, wherein metallic additive elements are incorporated in the structure of the black oxide layer, the method comprising the steps of: depositing metallic additive elements on the component, and immersing the component with the deposited metallic additive elements into a black oxide solution, wherein the metallic additive elements are incorporated in the structure of the black oxide layer.

9. The method according to claim 8, wherein the deposition of the metallic additive elements takes place by immersion in a pre-immersion solution.

10. The method according to claim 8, wherein the steps of depositing metallic additive elements and immersion into the black oxide solution are repeated, wherein the depositing is followed by the immersion into the black oxide solution.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0068] In the following, the invention will be described in more detail with reference to exemplary embodiments shown in the drawings. The exemplary embodiments and the combinations shown in the exemplary embodiments are purely exemplary and are not intended to define the scope of protection of the invention. This is defined solely by the appended claims.

[0069] It shows:

[0070] FIG. 1: a schematic sequence of a method for manufacturing a component.

DETAILED DESCRIPTION

[0071] In the following, identical or functionally similar elements are marked with the same reference signs.

[0072] FIG. 1 shows a possible schematic sequence of a method for manufacturing a component 1 with a black oxide layer 10. The component 1 is shown here as a ring or cylinder as an example, but any other shape can also be provided with such a black oxide layer 10.

[0073] The component 1 is first immersed in a pre-immersion solution 2 in which metallic additive elements are present. These metallic additive elements can be, for example, titanium dioxide, which is present in a titanium dioxide suspension in the pre-immersion solution 2. By immersing the component 1 in the pre-immersion solution 2, the metallic additive elements are deposited on the surface of the component 1, as exemplified here by beads 4.

[0074] The component 1 is then transferred to a black oxide bath 6. In this bath, the surface of the component is transformed into a black oxide layer 8. Thereby, iron and iron oxides contained in the material of the component 1 are dissolved and continuously re-deposited and restructured. The metallic additive elements 4, which are already deposited on the component 1, are thereby incorporated in the black oxide layer 8. In particular, the metallic additive elements are embedded in the structure of the black oxide layer 8.

[0075] The pre-immersion and blackening in the pre-immersion solution 2 and the black oxide bath 6 can be repeated as often as desired, preferably two to three times. Furthermore, the component 1 can be quenched after each black oxide bath 6.

[0076] After the black oxide process has been completed, a component 1 is available which has a homogeneous alloyed black oxide layer 10. The metallic additive elements 4 are embedded in this layer over the entire radial extent and are not recognisable as separate elements. Only a possible excess of additional elements could show up as a local concentration peak, but without being functionally disadvantageous. The metallic additive elements 4 serve in particular to adapt the properties of the black oxide layer 8 and do not contribute with their own properties.

[0077] This alloyed black oxide layer 10 can in particular be used to improve the properties of a black oxide layer in terms of wear resistance and degree of wear.

[0078] List of reference signs [0079] 1 Component [0080] 2 Pre-immersion solution [0081] 4 Metallic additive elements [0082] 6 Black oxide solution [0083] 8 Black oxide layer [0084] 10 Alloyed black oxide layer