Contact element and method for production thereof
A contact element comprises an electrically conductive layer and a masking layer. A contact side of the contact element is at least partly covered by the masking layer and the electrically conductive layer. The electrically conductive layer and the masking layer form a contact surface having alternating regions of the masking layer and the electrically conductive layer.
1. A contact element, comprising:
an electrically conductive layer; and
a masking layer selectively disposed on portions of a contact side of the contact element for defining masked regions and unmasked regions of the contact side, the electrically conductive layer selectively disposed in the unmasked regions for forming a contact surface having alternating regions of the masking layer and the electrically conductive layer.
2. The contact element of claim 1 , wherein the masking layer includes a lubricating filler medium.
3. The contact element of claim 1 , wherein the masking layer includes an electrically conductive filler medium.
4. The contact element of claim 1 , wherein the electrically conductive layer is disposed only in the unmasked regions of the contact element.
5. The contact element of claim 1 , wherein the contact side of the contact element comprises a generally planar surface on which the masking layer and electrically conductive layer are disposed.
6. The contact element of claim 1 , further comprising a substrate on which each of the electrically conductive layer and the masking layer are directly disposed.
7. The contact element of claim 6 , wherein a material of the substrate is copper or a copper alloy.
8. The contact element of claim 6 , wherein a material of the electrically conductive layer is different from a material of the substrate.
9. The contact element of claim 1 , further comprising:
a substrate; and
an intermediate layer disposed between the substrate and at least one of the masking layer and the electrically conductive layer.
10. The contact element of claim 9 , wherein the intermediate layer has a thickness between approximately 1 μm and approximately 3 μm.
11. The contact element of claim 9 , wherein a material of the intermediate layer contains one of nickel or a nickel alloy.
12. A method for producing a contact element, comprising:
masking a substrate of the contact element with a masking layer;
forming an unmasked region by partially removing the masking layer without removing a corresponding portion of the substrate covered by the masking layer; and
after the step of forming the unmasked region, depositing an electrically conductive layer in at least part of the unmasked region.
13. The method of claim 12 , further comprising providing an intermediate layer between the substrate and at least one of the masking layer and the electrically conductive layer.
14. The method of claim 12 , wherein the masking layer includes at least one of an electrically conductive filler medium and a lubricating filler medium.
15. The method of claim 12 , wherein the forming step includes displacing parts of the masking layer with a displacement member.
16. The method of claim 12 , wherein the masking layer includes a photosensitive filler medium.
17. The method of claim 16 , wherein the forming step includes illuminating the masking layer and photochemically developing an illuminated portion or a non-illuminated portion of the masking layer for partial removal.