Oerlikon Surface Solutions Ag, Pfaffikon

Florian Seibert

Jürgen Ramm

Beno Widrig

Peter Ernst

Matthias Lukas Sobiech

Doris Fopp-Spori

Kerstin Glantz

Jurgen Ramm

Kerstin GLÄNTZ

Benno Widrg

Doris Foppspori

The present invention relates to coated sliding parts having coating systems which allow better sliding performance under dry and/or under lubricated conditions. The coating systems according to the present invention being characterized by having an outermost layer which&#x2014;is a smooth oxide-containing layer in case of sliding applications under lubricated conditions, or&#x2014;is a self-lubricated layer comprising molybdenum nitride, in case of sliding applications under dry or lubricated conditions, is a self lubricated layer with a structured surface comprising a multitude of essentially circular recesses with diameters of several micrometers or below, the recesses randomly distributed over the surface.

Coating with enhanced sliding properties

The present invention relates to a tribological system () comprising a first body () and a second body (), which each form a component of an internal combustion engine (), in particular a piston (), a piston ring () or a cylinder (), and the surfaces () of which have a first and a second material area () which come into contact with each other at least in some regions during operation and form a tribological contact, wherein the first and/or the second material area () is formed as a layer on the basis of chromium oxide or aluminum chromium oxide. The invention also relates to an internal combustion engine () having such a system ().

Tribological system of an internal combustion engine with a coating

A method for producing an oxidation barrier layer on a workpiece substrate in which the oxidation barrier layer is produced by means of physical deposition from the gas phase (PVD) and is an oxide that is materially related to the uncoated surface of the workpiece.

Oxidation barrier layer

The present invention relates to coated sliding parts having coating systems which allow better sliding performance under dry and/or under lubricated conditions. The coating systems according to the present invention being characterized by having an outermost layer which&#x2014;is a smooth oxide-containing layer in case of sliding applications under lubricated conditions, or&#x2014;is a self-lubricated layer comprising molybdenum nitride, in case of sliding applications under dry or lubricated conditions, is a selflubricated layer with a structured surface comprising a multitude of essentially circular recesses with diameters of several micrometers or below, the recesses randomly distributed over the surface.

A coated body includes a body () with a body surface () and a coating system () deposited on at least a portion of the body surface (). The coating system () includes at least one hard friction reducing coating deposited as an outermost layer () which exhibits droplets () at its surface. The outermost layer () includes molybdenum copper nitride and/or molybdenum nitride and copper nitride, and at least some of the droplets () consist mainly of copper. Preferably most of the largest droplets () consist mainly of copper.

Arc PVD coating with enhanced reducing friction and reducing wear properties

The invention relates to a coating comprising at least one molybdenum-containing layer having molybdenum oxide, said molybdenum being essentially molybdenum monoxide. The invention further relates to a PVD process for producing the disclosed coating, in which the layer comprising the molybdenum monoxide is produced using arc evaporation. The invention also relates to a component that has said coating.

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Sevelen, Switzerland

Florian Seibert