DE10311142A1 - Paint system for parts subject to friction, e.g. steel parts in plants for high-purity products, contains wear-resistant and friction-reducing additives concentrated towards the inside and outside respectively - Google Patents

Abstract

Paint system for parts subjected to friction contains wear-resistant additive(s) (I) and friction-reducing additive(s) (II), with concentration gradients such that the concentration of (I) decreases and that of (II) increases from the substrate towards the outer surface. A paint system (1) as a surface coating for substrates (2), especially for parts subjected to friction, consisting of a paint matrix containing additives, of which at least one is an additive (I) for increasing the wear resistance of the coating and at least one other (II) is an additive for reducing the coefficient of friction. The system contains a layer (1A) with concentration gradients for additives, in which the concentration of (I) decreases from the side facing the substrate to the opposite side while the concentration of (II) increases. Independent claims are also included for (1) a paint system (1) with additives as above, in this case with two layers, one of which (1A) (next to the substrate surface) contains additive (I) while the other (1B) contains (1B) (2) a method for the production of (1) consisting of additive-filled layers (1A) or (1A plus 1B) as above .

Description

The invention relates to a paint system as a surface layer for substrates according to those in the preamble of claim 1 and 2 features mentioned and a method for producing the paint system according to the preamble of the claim 24 closer defined art.

In practice, friction and resulting wear Components for factors limiting many technical applications with regard to one Lifetime of technical systems or the range of possible applications. To improve the life of components as well as the restrictions of possible uses to reduce has been adopted Lubricate components with suitable lubricants or on their surface with firmly adhering and friction-reducing wear protection layers to provide. Such wear protection layers begin known lubricant coatings, galvanic or chemical Metal coatings, such as hard chrome, and also diamond-like Carbon layers (DLC). In addition, it is also known Wear protection layers designed as ceramic coatings by means of various physical and / or chemical processes on surfaces of components subject to friction.

Through the use of anti-friction coatings for reibbeansprüche Components, the friction in the area of friction surfaces is reduced and thus a Wear through Abrasion minimized. The one for the production of the sliding lacquer coatings The sliding varnishes used usually consist of an organic Film former as well as from a lubricant that after drying or curing is embedded in the organic film former. In addition, the Sliding varnish other additives such as defoamers, leveling agents and other processing aids added.

The lubricants mixed into the paints are et al molybdenum disulfide, Graphite, hexagonal boron nitride, polytetrafluoroethylene, polyamide, Polyethylene, silicones or silicone oils, their use in the field sufficient lubrication technology is known.

A coefficient of friction of such sliding varnishes, which in the present case as a coefficient from the force required to move of a component an area is necessary, and the normal force with which the component on the surface suppressed, is defined for a counter body Steel typically 0.1 to 0.3. Are the two of each other made of steel for high-stress components, the coefficient of friction is on the other hand, without a lubricating lacquer coating, typically 0.5 to 0.7.

Sliding varnish coatings find in particular then used when the use of greases or oils is undesirable, such as in plants in which high-purity products are manufactured are contaminated by contact with lubricating oils or greases be, or if permanent lubrication with greases or Lubricating oils, such as in closed housings where relubrication is required not possible is not guaranteed is. Furthermore, there are lubricating lacquer coatings for running-in lubrication used.

The wear-reducing effect of the lubricating lacquer coatings is based on the fact that the organic film former is slowly removed under friction and lubricant is permanently formed during operation. A mechanical one Resilience of a sliding lacquer coating is essentially due to determined the organic film former used.

The disadvantage here, however, is that a lubricating lacquer coating is removed very quickly with high mechanical stress, so that their Lubrication effect is significantly reduced after a short time and component wear in undesirable Extent that may occur lead to a malfunction can.

The present invention lies hence the task of a paint system as a surface layer for substrates, preferably for to provide required components, by means of which a coefficient of friction is reduced and at the same time for the coated Component has a high wear resistance guaranteed.

According to the invention, this object is achieved with a Paint system according to the characteristics of claim 1 or claim 2 and with a Process for producing a paint system as a surface layer according to the characteristics of the Claim 24 solved.

With the paint system according to the invention on the one hand reduces friction between two components and simultaneously a component wear of the component coated with the paint system avoided because the paint system even with high mechanical loads due to high wear resistance is marked.

This is achieved in that on a component or a lacquer layer is provided on a substrate, the one concentration gradient which has additives, a concentration of wear-resistant additive from the component surface facing Decreases in the direction of the side facing away from the component surface and starting from a concentration of the friction reducing additive from the component surface facing Increases in the direction of the side facing the component surface.

It is particularly advantageous that the Structure of the coating system or the lubricating coating from one Film former, a wear-resistant additive and a friction reducing additive with the above Concentration profiles permanent even with high mechanical loads Sliding properties combined with good wear resistance guaranteed there is a so-called rubbing out of the friction-reducing additive from the lacquer representing the matrix material due to the presence of the wear-resistant additive is reduced or entirely is avoided.

In an alternative embodiment of the invention Paint system as a surface layer for substrates, in particular as a sliding lacquer coating for components stressed by the Caribbean, it is envisaged that at least two layers of paint on top of each other on the substrate surface are arranged, with a component-side lacquer layer with wear-resistant additive filled and is facing away from the component surface Lacquer layer, which is arranged on the component surface-side lacquer layer is filled with a friction reducing additive.

This alternative lacquer system according to the invention guaranteed also that the component surface facing away Paint layer even against high mechanical loads Sliding lacquer layers known in practice have significantly improved abrasion resistance with a low coefficient of friction. So that is for a with the paint system according to the invention coated component and for a counter body in frictional contact with the component via a good wear protection for a long time also guaranteed under operating conditions in which the slide coating known from practice after a short time Operating times are not sufficiently stable.

With an advantageous further education it is the paint system according to the invention with two layers of paint provided that the component-surface side Additional layer of paint with a friction reducing additive and / or the component surface facing away Additional layer of paint with wear-resistant additive filled is.

So the friction-reducing ones as well as the wear-resistant properties of the coating system according to the invention adaptable to the respective application, as required or adjustable. The reduction in friction as well as wear resistance of the paint system by adding an additional friction reducing or a wear-resistant additive systematically further improved, with a range of applications of coating system according to the invention coated components extended and their lifespan advantageously further increased becomes.

When carrying out the method according to the invention for producing the coating system according to the invention, by means of which at least one lacquer layer is produced on a component is made from a varnish with an at least friction reducing Additive filled is, and a varnish with an at least wear-resistant additive filled is, is built in terms of a concentration of Additives gradual varnish layer on a component, which creates has a low coefficient of friction on its side facing away from the component and on its component-facing side due to its high wear resistance is marked. On the one hand, this creates a friction between the coated component and a counter body and on the other hand a wear of the coated component safely avoided, as compared to known slide coating reduced removal of the coating system according to the invention due to the improved wear resistance of the applied Paint layer close to the component surface Areas occurs.

Other advantages and beneficial Embodiments of the object according to the invention are the description, the drawing and the patent claims.

In the drawing there are two exemplary embodiments the invention based on two highly schematic representations of a coating system according to the invention as a surface layer shown on a substrate or a component, which in the following Description closer explained become. Show it

1 a schematic diagram of a paint system designed as a single-layer paint system according to the invention with a paint layer; and

2 a schematic diagram of a paint system according to the invention as a surface layer of a substrate, the paint system being designed as a multi-layer paint system with two paint layers.

description of the embodiments

Referring to 1 is a paint system 1 shown, which consists of only one layer of paint 1A is constructed. The paint layer 1A is present by spraying on a substrate 2 applied, then thermally cured and thus as a firmly adhering surface layer on the substrate or component 2 arranged. During spraying, two lacquers filled with different additives with time-controlled changing proportions are continuously sprayed on 3 supplied, mixed in this before application and then sprayed continuously onto the substrate.

Thus, the surface of the substrate 2 coated with a layer of paint from a side of the layer of paint facing the component surface 1A , ie the surface of the substrate 2 , up to a side of the lacquer layer facing away from the component surface 1A , ie on the substrate 2 opposite side of the paint layer 1A , one in 1 concentration profile shown 4 of a friction reducing additive and a concentration profile 5 a wear-resistant additive.

In the 1 concentration profiles shown 4 . 5 the additives of the paint layer 1A are only qualitative and are depending on the respective application on the respective spraying device 3 Controlled proportions of the two paints adjusted during spraying as required. One of the two is the spray device 3 supplied varnish filled with a friction reducing additive and the other varnish with a wear-resistant additive with a predefined fill level.

Good wear resistance and a desired reduction in the coefficient of friction of the paint layer 1A The lacquer layer shows that it can be reached on the side facing away from the component surface 1A a high concentration of wear-resistant additive and a low concentration of friction-reducing additive in areas close to the substrate.

Alternatively, it can also be provided be that the "friction-reducing" varnish with several friction-reducing additives and / or the "wear-resistant" varnish with several wear-resistant additives filled is.

The spraying device 3 Proportions of the two paints are supplied during the application process of the paint layer 1A on the substrate 2 controlled in such a way that a concentration of the wear-resistant additive in the lacquer layer 1A with increasing distance from the surface of the substrate 2 decreases and the concentration of the friction-reducing additive simultaneously increases in the aforementioned direction, so that on the one hand high wear resistance in areas of the paint system near the component surface and on the other hand a reduction in friction in areas of the paint system remote from the surface is effectively achieved.

In 2 is a too 1 alternative paint system 1 shown, which is on a substrate 2 is arranged as a surface layer. The paint system 1 according to 2 consists of a first layer of lacquer 1A and a second coat of paint 1B , the first layer of paint 1A on the surface of the substrate 2 and the second layer of paint 1B on the first layer of paint 1A is arranged. The two layers of paint 1A and 1B are applied using conventional painting technology. The layer thickness of the lacquer layers 1A and 1B Depending on the application, z. B. each be between 10 microns and 100 microns.

First, the varnish layer on the surface of the substrate 2 applied. After applying the varnish layer 1A it is possible to dry them and remove the solvents from the paint layer 1A to remove. Then the varnish layer 1B also with a layer thickness in the range of 10 μm to 100 μm on the lacquer layer 1A applied. After applying the varnish layer 1B becomes the paint system 1 thermally cured, the curing process still a drying phase of the paint layer 1B can be upstream.

Alternatively, it can also be provided that the lacquer layer 1B on the after applying the varnish layer 1A still wet, not dried paint layer 1A is applied, and the paint system 1 after applying the varnish layer 1B is cured thermally, and a drying phase of the coating system can be provided before curing.

The paint systems 1 according to 1 and 2 represent thermosetting lacquer systems which, as described above, are constructed either from one lacquer layer or from several lacquer layers arranged one above the other. Particularly in the case of the last-mentioned multi-layer design of a coating system according to the invention, there is advantageously the possibility of using the combination of fillers of the individual layers to adjust the properties of the entire coating system precisely to the respective application.

Every layer of paint in a paint system is by means of known coating methods, such as spraying, Diving, knife coating, printing or dosing quickly and easily on one Substrate or component surface applied. This means that even with components to be coated with complex component geometry mostly not too large apparatus Requirements required.

A volume content of the additives or fillers of the lacquer layer 1A according to the paint system 1 or the layers of paint 1A . 1B of the paint system 1 according to 2 Depending on the application, the material used, the additives, the substrate and the lacquers and the particle sizes of the additives, it is between 10% by volume and 90% by volume, the particle sizes of the additives essentially depending on the material used and the particular application at hand can be specified.

The particle sizes or the mean diameters (D50) for as ceramic fillers executed wear-resistant particles are between 0.2 μm and 50 μm, preferably in a range between 0.3 μm and 30 μm.

Reduce friction with polymer particles or inorganic dry lubricants The additives are known to reduce and adjust the coefficient of friction of a coating system, the average particle diameter of such friction-reducing additives being between 1 μm and 100 μm in the present case. Furthermore, it is possible to add metallic particles with a mean particle diameter of 1 μm to 50 μm to a lacquer, with which in particular electrical properties of the lacquer system according to the invention are adjusted.

As the wear resistance of the paint systems 1 Improving additives include ceramic particles, such as Al ₂ O ₃ , SiC, AlN, TiN, or glass or a mixture thereof, and metal particles, such as W or Cu, are particularly suitable.

In order to achieve a reduction in friction, at least one surface lacquer layer is in accordance with the single-layer lacquer system 1 or also according to the multi-layer coating system 2 filled with friction-reducing additives or polymer particles, such as polyethylene, polyamide or polytetrafluoroethylene, and / or with dry lubricants, such as graphite or MoS ₂ .

That means that by adding the aforementioned filler to the "pure" paints, the rubbing properties and also wear resistance of the coating system according to the invention a goodness can be set the between conventional Sliding varnishes and metallic or ceramic hard coatings is arranged by components.

In the paint system according to the invention alternatively or in combination the possibility of the lacquer layer of a single-layer paint system or the different layers of paint a multi-layer coating system with different additives to fill the individual filling levels of the additives in the paints as required from the paint layer Varnish layer to vary depending on the particle sizes of the additives of the respective application and corresponding concentration profiles of additives over the layer height to be set in every single layer of paint.

So it is in the embodiment of the in 2 multi-layer or two-layer paint system shown 1 provided that in the paint layer facing the component surface 1A Ceramic particles with particle diameters between 0.3 μm and 10 μm and with a degree of filling between 0.5% by volume and 50% by volume of filler based on the hardened lacquer are arranged. The one on the paint layer 1A arranged further lacquer layer 1B is also with a ceramic filler, as it is with the lacquer layer 1A It is used with a fill level of 0.5 vol.% To 10 vol.% And a polymeric dry lubricant, such as ultra-high molecular weight polyethylene powder with a particle size between 1 μm and 100 μm and a fill level of 5 vol.% To 50 vol .-%, filled, the wear-resistant additive of the lacquer layer 1B also from the ceramic filler of the lacquer layer 1A can deviate.

The person skilled in the art will prepare one for the Paint system used paint with needs-based particle mixtures fill the additives described above to any combination of properties of the paint system.

Besides a reduction the friction as well as an increase wear resistance also other properties of the paint system according to the invention a targeted selection of additives can be set. So through the use of SiC and AlN, for example, a thermal conductivity and an electrical insulation of the paint system according to the invention affected become. If the paint system is, for example, with TiN and / or different other, partly mentioned above metal powder, will improve the electrical conductivity of the paint system reached.

The educts which are used for the production of the coating system according to the invention used advantageously offer the possibility of the coating system on a substrate using conventional painting processes, such as spraying or diving, and then at temperatures between 40 ° C and Burn in at 350 ° C, essentially the stoving temperatures are below 200 ° C, so that both Metals and ceramics as well as polymers can be coated.

A primer or application an adhesion promoter layer on a surface of one with the coating system according to the invention component to be coated is generally not necessary, which makes the coating system an inexpensive, wear-resistant and friction-reducing surface protection layer represents. The components to be coated must therefore be coated just cleaned and degreased.

Is the paint system according to the invention as a one-coat paint system executed it consists of paints as a binding matrix, which are organic and / or organometallic Film maker without restriction have the selection of metal ions, with at least one ceramic and / or metallic, wear-resistant additive or filler and / or with at least one polymeric or inorganic, friction-reducing Additive whose volume content is greater than 10% by volume and which is preferred is a dry lubricant.

The lacquer layer of the single-layer lacquer system then has a higher concentration of ceramic and / or metallic filler particles in the vicinity of the coated substrate than on the side facing the substrate surface and is on the side facing away from the substrate surface, ie on the egg nem surface facing the counter body, carried out with a higher dry lubricant concentration than on the side facing the substrate surface.

Is the paint system according to the invention designed at least as a two-layer coating system, the substrate is facing Lacquer layer with a ceramic and / or metallic filler and the the surface layer of the lacquer system forming further lacquer layer with at least one filled polymeric and / or inorganic dry lubricant, wherein the surface layer preferably additionally be filled with a ceramic and / or metallic additive can. In the event that the a counter body facing surface layer the paint system is filled with a wear-resistant additive, is the concentration of the wear-resistant additive in the substrate surface facing Lacquer layer higher than the concentration in the lacquer layer facing away from the substrate surface.

The paint system according to the invention is one Variety of wear protection applications Components and components made of light metals or steels. The paint system described is for both large-scale and local Coatings suitable, which manifold applications both in the automotive sector as well as in classic mechanical engineering.

With one in the above Way executed Paint leads the combination of with a film former, a wear-resistant additive, like ceramic particles, as well as a friction reducing additive, like a dry lubricant, compared to known ones Sliding lacquer systems have significantly improved mechanical stability and resilience as well as good corrosion and environmental resistance with at least the same Friction reduction is achieved. This results from the fact that the Addition of ceramic particles reinforces the film former of the Varnish that acts as a matrix for serves the dry lubricant used.

A particularly high mechanical stability and resilience of the coating system according to the invention is achieved when the ceramic particles over on their surface groups can chemically crosslink with the film-forming agent of the lacquer or are particularly well networked by the film creator. For improvement mechanical stability wear it significantly when the ceramic particles due to their surface structure Wet dry lubricant used very well, so that it on the surface accumulate and adhere to the dry lubricant.

The ceramic particles thus effect as wear-resistant additives the paint has a high bond between the paint and the dry lubricant particles, which is why even with high mechanical friction loads by a against body difficult to rub out of the paint.

Especially for networking advantageous groups on the surfaces of the ceramic particles can either on the surface of the ceramic particles inherent be present or in a before mixing a paint with the ceramic particles upstream pretreatment step, for. B. by coating or chemical or physical processes, on the surfaces of the Ceramic particles are generated.

The paint layer 1A of the paint system 1 the 2 can, for example, be made of a hybrid polymer, such as an Ormocer®, and a wear-resistant additive designed as a ceramic filler, such as SiC. The second, upper layer of paint 1B can preferably be composed of a hybrid polymer, such as an Ormocer®, a ceramic filler, such as SiC, and a dry lubricant, such as ultra-high molecular weight polyethylene.

A lacquer layer designed in this way and applied solely to a component 1A with a thickness of approx. 50 μm under heavy mechanical loads such as vibratory wear with a load of 20 N shows strong wear on the counter body with a service life of 5 to 10 minutes. The second layer of paint 1B has a low coefficient of friction as a single layer on a component surface with a layer thickness of approx. 50 μm, but is rubbed off in a few minutes when subjected to high mechanical loads, such as vibratory wear under 20 N load.

A coating system with a layer thickness of approximately 100 μm, which consists of a combination of the coating layers 1A and 1B exists, has a much higher resistance at very low coefficients of friction without wear of a counter body, whereby the service life of the paint system 1 is over 120 minutes. Will the paint system 1 in the same way as the individual layers of paint 1A and 1B applied, destruction of the second lacquer layer is also advantageously carried out 1B avoided while doing this alone without the first coat of paint underneath 1A is quickly destroyed.

Ormocer®-based paints, for example SiC powder added have better wetting of polyethylene as well as other surfaces than with Ormocer®-based paints without the addition of SiC powder the case is.

Thus, the combination of an organometallic film former, a wear-resistant additive designed as a ceramic filler and a friction-reducing additive designed as a polymeric dry lubricant in a coating system leads to a lubricating coating with good long-term sliding properties and egg ner high wear resistance, with which wear of the coated component and a counter body engaged therewith is substantially avoided or greatly reduced compared to known sliding varnish coatings.

Particularly good properties achieved with a paint system, the top coat of paint at 40 Vol .-% of polyethylene and 0.5 vol .-% to 3 vol .-%, preferably 1 vol .-% filled with SiC is. Such a paint system shows no impairment the sliding properties in comparison to conventional sliding paints on and is also advantageous due to its high wear resistance, especially with pressure loads and high surface pressure, characterized.

The various additives are mixed, for example, with ZrO ₂ grinding balls, with which agglomerates are broken up, which results in a high degree of dispersion.

Alternatively, commercially available ones can also be used Dissolvers from the paint industry are used for the dispersion of color pigments in paints.

Depending on the present Applications are varnishes on a purely organic basis, varnishes with organometallic and organic film formers, such as Nanomere®, or Paints used on a purely organometallic basis, with additions of organometallic film formers to improve chemical Connection of metallic and ceramic filler particles to the organic Lead matrix of the paint.

Paint systems according to the invention can both for organic solvent and diluents for as well Water as a diluent be overlooked, with varnishes for organic solvents with organometallic film formers, the majority of which are based on silicon based as a metallic component, are particularly advantageous. Furthermore, you can the varnish additives used, such as defoamers, Leveling agents, catalysts and the like.

Claims (28)

Paint system ( 1 ) as a surface layer for substrates ( 2 ), preferably for components subject to friction, consisting of a varnish as matrix material, which has at least one film former, and with additives embedded in the varnish, at least one additive for increasing the wear resistance of the surface layer and at least one further additive for reducing a friction value of the surface layer is characterized in that a lacquer layer ( 1A ) is provided which has a concentration gradient with regard to the additives, a concentration of wear-resistant additive decreasing from the side facing the component surface in the direction of the side facing away from the component surface and a concentration of the friction-reducing additive increasing starting from the side facing the component surface in the direction of the side facing away from the component surface. Paint system ( 1 ) as a surface layer for substrates ( 2 ), preferably for components subject to friction, consisting of a varnish as the matrix material, which has at least one film former, and with additives embedded in the varnish, at least one additive for increasing wear resistance of the surface layer and at least one further additive for reducing a coefficient of friction of the surface layer characterized in that at least two layers of lacquer ( 1A . 1B ) are provided, with a layer of lacquer on the component surface ( 1A ) is filled with at least one wear-resistant additive and a paint layer facing away from the component surface ( 1B ), which on the component surface-side lacquer layer ( 1A ) is arranged, is at least filled with a friction-reducing additive. Paint system according to claim 2, characterized in that the paint layer on the component surface ( 1A ) is additionally filled with a friction-reducing additive and / or the paint layer facing away from the component surface ( 1B ) is also filled with wear-resistant additive. Paint system according to one of claims 1 to 3, characterized in that that the Varnish a thermosetting Paint is. Paint system according to one of claims 1 to 4, characterized in that the Lacquer organic solvent or contains water as a solvent. Paint system according to one of claims 1 to 5, characterized in that that the Paint defoamer and / or leveling agent and / or at least one catalyst. Paint system according to one of claims 1 to 6, characterized in that the Lacquer at least one organometallic and / or at least one contains organic film formers. Paint system according to one of claims 1 to 7, characterized in that the existence Proportion of additives from 10% to 90% by volume of hardened paint is. Coating system according to one of Claims 1 to 8, characterized in that a proportion of the wear-resistant additive is 0.5% by volume to 50% Vol .-% is. Paint system according to one of claims 3 to 9, characterized in that the existence Proportion of wear-resistant additive in the component surface facing Lacquer layer 0.5 vol.% To 50 vol.% And in the lacquer layer facing away from the component surface Is 0.5 vol .-% to 10 vol .-% of hardened paint. Paint system according to one of claims 1 to 10, characterized in that the existence Proportion of the friction reducing additive 0.5 vol.% To 10 vol.% is. Paint system according to one of claims 1 to 11, characterized in that the wear-resistant additive consists of ceramic particles, preferably SiC, AlN, TiN, Al ₂ O ₃ , or glass or a mixture thereof. Paint system according to one of claims 1 to 12, characterized in that as further additive metal particles, preferably tungsten, copper particles or a mixture thereof. Paint system according to one of claims 1 to 13, characterized in that the friction reducing additive is preferably a dry lubricant, such as ultra high molecular weight polyethylene, fluorinated polymers, polytetrafluoroethylene, polyamides, polypropylene, or graphite or MoS ₂ or a mixture thereof. Paint system according to one of claims 1 to 14, characterized in the existence average particle diameter of the wear-resistant additive 0.2 μm to 50 μm, preferably 0.3 μm to 30 µm. Paint system according to one of claims 2 to 14, characterized in that the existence average particle diameter of the wear-resistant additive for several Lacquer layers 0.3 μm is up to 10 μm. Paint system according to one of claims 13 to 16, characterized in that the existence average particle diameter of the metal particles is 1 μm to 50 μm. Paint system according to one of claims 1 to 17, characterized in that the existence average particle diameter of the friction reducing additive 1 μm to 100 μm, preferably 0.3 μm up to 50μm. Paint system according to one of claims 1 to 18, characterized in that that a curing temperature a layer of varnish 40 ° C up to 350 ° C, preferably 40 ° C up to 200 ° C, is. Paint system according to one of claims 1 to 19, characterized in the existence designed as a ceramic particle wear-resistant additive on its surface is done with groups, which react chemically with the film-forming agent of the paint, the Groups on the surface of the additive inherent or on the surface are generated. Paint system according to one of claims 1 to 20, characterized in that that a Layer thickness 20 μm up to 200 μm is. Paint system according to one of claims 1 to 22, characterized in that that a Layer thickness of a part facing away from the component surface Lacquer layer 10 μm up to 100 μm and facing a component surface Lacquer layer 10 μm up to 100 μm is. Paint system according to one of claims 1 to 22, characterized in that that the Lacquer made of organic-inorganic hybrid polymer with a wear-resistant additive, preferably ceramic particles with a particle size of 0.3 μm to 10 μm and one filling level from 0.5% by volume to 20% by volume of hardened lacquer. Method for producing a paint system according to one of the preceding claims, characterized in that on the component ( 2 ) at least one layer of paint ( 1A ; 1A . 1B ) is produced, which is composed of a lacquer with a first additive filling and a lacquer with a second additive filling. A method according to claim 24, characterized in the existence Lacquer is filled with at least one wear-resistant additive and the other paint with at least one friction-reducing Additive is filled, and that during the Apply a portion of the paint with the wear-resistant additive is reduced with increasing layer thickness and a proportion of the lacquer is increased at the same time with the friction reducing additive. Method according to claim 24 or 25, characterized in that on the component ( 2 ) two layers of paint ( 1A . 1B ) are applied, with a layer of paint facing the component ( 1A ) before applying the paint layer facing away from the component surface ( 1B ) is dried and the paint system ( 1 ) after applying the paint layer facing away from the component surface ( 1B ) is thermally cured. The method of claim 24 or 25, because characterized in that on the component ( 2 ) two layers of paint ( 1A . 1B ) are applied, with the paint layer facing away from the component surface ( 1B ) on the wet paint layer facing the component surface ( 1A ) is applied and the paint system ( 1 ) is then cured thermally. Method according to one of claims 24 to 27, characterized in that a lacquer layer ( 1A ; 1A . 1B ) by spraying, dipping, knife coating, printing or dosing on the component ( 2 ) is applied.