Sliding element with exposed functional surface
AssigneeFederal-Mogul Burscheid GmbH
InventorsMarcus Kennedy, Marc-Manuel Matz
Life of this patent
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Abstract
The invention relates to a sliding element, which comprises a support and a coating applied by means of thermal spraying on the support, wherein the coating comprises at least two phases and at least one of the at least two phases is recessed in respect of the other phase of phases.
Claims22
A sliding element, comprising:
- a support;
- and
- a coating applied on the support by means of thermal spraying;
- wherein
- the coating comprises at least two phases;
- and
- at least one of the at least two phases is recessed with respect to the other phase or phases.
The sliding element according to any one of the preceding claims, wherein
- the recessed phase comprises a metal-based alloy;
- and
- the element most frequently occurring in the recessed phase has an ordinal number <14 from the periodic table.
The sliding element according to any one of the preceding claims, wherein
- the exposure of the recessed phase takes place mechanically or chemically.
The sliding element according to any one of the preceding claims, wherein
- the exposure depth, defined over the reduced groove depth Rvk of the recessed phase, amounts to 0.5 μm-6 μm.
The sliding element according to any one of the preceding claims, wherein
- the sliding element is a piston ring and is produced from a casting material or steel.
A method for producing a sliding element, comprising:
- making available a support;
- application, by means of thermal spraying, of a coating on the support, wherein the coating comprises at least two phases;
- and
- recessing of at least one of the at least two phases with respect to the other phase or phases.
Dependencies are inferred from the claim text.