WO2016110538A1

WO2016110538A1 - Component with sol-gel layer and method for producing the component

Info

Publication number: WO2016110538A1
Application number: PCT/EP2016/050208
Authority: WO
Inventors: Tobias Heine; Friedhelm KIRCHHOF
Original assignee: Hella Kgaa Hueck & Co.
Priority date: 2015-01-07
Filing date: 2016-01-07
Publication date: 2016-07-14
Also published as: DE102015100095A1

Abstract

The invention relates to a component (1) on mobile operating elements for motor vehicles, having at least one non-ceramic main part (2), characterised in that the component has a sol-gel layer (4) applied to the main part (4).

Description

Component with sol-gel layer and method for producing the component

description

The invention relates to a component on mobile control elements, in particular remote controls for motor vehicles with a sol-gel layer. Furthermore, the invention relates to a method for producing the component with the sol-gel layer.

The use of ceramic materials in remote controls for

Motor vehicles are often not possible due to the high technical requirements of the original equipment manufacturer, for example with regard to mechanical loads in case tests. Although the very hard, but also very brittle material has a good resistance to abrasion, but it can quickly yield and break under stress on impact.

An alternative to producing as close as possible to real ceramic optics on such components would be the combination with a suitable coating to an overall product with similar properties, the subjectively detectable optical and haptic features, such as weight, thermal conductivity, gloss and color, are transmitted from real ceramic. Coatings and material combinations that meet the mechanical and chemical requirements of the component and the

Surface, e.g. Steaming, sintering, physical

Although these requirements are met to the greatest possible extent by vapor phase deposition (PVD) and chemical vapor deposition (CVD), they produce optically good optics, but are still relatively expensive and expensive

Color selection limited to a limited color spectrum.

A corresponding imitation of colored and light, especially white, ceramic is not possible with the previously used coatings for remote key parts. Multi-colored and marbled-seeming surfaces, such as "stone look", are also not possible with the previously used coatings for remote control key parts. Ceramic materials do not have sufficient resistance to mechanical stress, such as toughness or ductility, to meet automotive-compliant mobile control requirements. In addition, are ceramic

Materials and the associated manufacturing processes consuming and expensive.

In which, for example, a metallic base body is coated by means of PVD, the sensory material properties of dark or black ceramic can be mimicked as far as possible, with good and chemical properties at the same time

Surface resistance. A coating in a colored, especially bright, or white color spectrum is not possible with this method.

A suitable method, which also preserves the mechanical and chemical properties and at the same time allows colors and whiteness and which mimics the sensory material properties of a ceramic is not known.

Other materials and coating methods that are able to imitate at least approximately ceramic parts or surfaces, in particular in white and colored, have little or no resistance to mechanical and chemical stress or resistance to common aggressive media (fuels, cleaning agents, Creams and body fluids).

Object of the present invention is therefore to provide a component with which the disadvantages of the prior art are overcome. Furthermore, a reduction of material and production costs to take place at the same time high color selection of the ceramic optics.

To achieve this object, the invention in conjunction with the preamble of claim 1, characterized in that the component comprises a sol-gel layer,

- Which is applied to the body or

- Which is applied to an intermediate layer, wherein the intermediate layer between the sol-gel layer and the base body is arranged. The particular advantage of the invention is to provide a component in which a ceramic optics (= appearance) is produced with a high color selection, and in which there is also an improvement of the mechanical and chemical

Component properties sets.

Preferably, the mobile controls are remote controls, in particular

Remote control key. Preferably, the components key housing, push buttons, buttons or other components of the mobile controls.

Preferably, the non-ceramic base body (= substrate) made of metal or plastic. Preferably, the sol-gel layer is applied to the base body. Here are the factors of the sensory detectable material appearance of ceramics, such as weight, thermal conductivity, gloss and color, be wholly or at least partially imitable.

In this case, a transfer of the optics of ceramic materials, in particular of real ceramics, on non-ceramic materials, preferably in bright and colorful colors, especially in "white", to imitate light or white ceramics, take place.

Preferably, a coating based on a sol-gel coating process is carried out with a simultaneous mechanical and chemical resistance.

Preferably, a sol-gel layer designates all via a sol-gel process

prepared inorganic or hybrid polymer film systems.

A sol-gel coating creates an easy-to-clean surface due to its nano-structure.

According to a development of the invention, a cover layer is arranged on the sol-gel layer.

Preferably, the cover layer serves as a surface layer which closes the component towards the top. According to a development of the invention, the intermediate layer and / or the

Cover layer formed as functional layers.

Preferably, the functional layers have additional properties, e.g. a corrosion protection.

According to a development of the invention, the intermediate layer and / or the

Cover layer by means of electroplating applied.

Preferably, the metal applied in electroplating is made of copper, nickel and chromium. This list is not exhaustive. Preferably, the

Copper layer to create an electrically conductive ductile layer.

The galvanic coating of the copper by means of nickel is primarily a diffusion barrier, which avoids corrosion of the underlying copper layer and the carrier material. The final coating of the nickel layer by means of chromium leads to a very hard and wear-resistant surface.

According to a development of the invention, the intermediate layer and / or the cover layer are formed as a sol-gel layer.

In this way, the component has a plurality of gel sol layers arranged one above the other, which additionally improves a ceramic appearance of the component.

Preferably, the sol-gel layer is colored according to a defined color system

designed and / or has black, white or gray parts.

According to a development of the invention, the sol-gel layer has a defined degree of gloss.

Preferably, a sol-gel layer is dyed freely definable. The gel sol layer preferably has a defined, freely selectable degree of gloss from matt to high gloss. The degree of gloss is preferably defined by the components of the sol-gel layer used. Particularly preferred is a high gloss (> 70 GU, measuring angle 20 °), a medium gloss (10 - 70 GU, measuring angle 60 °) or a low gloss (<10 GU, measuring angle 85 °) set.

The gloss and color values of the sol-gel coating may be color matched according to the exemplary ceramic materials or other specifications, e.g.

Customer specification, to be referenced.

According to a development of the invention, the sol-gel layer is colored according to a defined color system and / or black, white or gray parts.

By color, a monochromatic or a multicolor color system is preferably to be understood.

The above object is further achieved with the features of claim 8, namely with a method for coating components with a non-ceramic body on mobile controls for motor vehicles, having one of the following steps:

- Applying a sol-gel layer on the body or

Applying the sol-gel layer to an intermediate layer, the intermediate layer having been previously applied to the base body,

to create a ceramic look.

In this way, a method is provided in which a ceramic optic is produced with a simultaneously high color selection of the component, and in which an adjustment of the mechanical properties of the component also takes place.

According to a development of the invention, the method has the following step:

- Applying a cover layer on the sol-gel layer. Further advantages of the invention will become apparent from the further subclaims.

Embodiments of the invention are explained below with reference to the drawings.

It shows:

1 shows a schematic cross section through an inventive component.

In Fig. 1 is a schematic cross section through the component according to the invention is shown.

The component 1 is, for example, as a housing, snaps or buttons of a

Vehicle key determined. The component 1 has a non-ceramic

Base 2 on. The non-ceramic body 2 is made of metal or plastic. A sol-gel layer 4 is applied to the base body 2 by means of a sol-gel coating process.

The sol-gel layer 4 has a corresponding degree of gloss. The sol-gel layer 4 is colored according to a defined color system and preferably has a high "white" content in order to image a ceramic optic.

An intermediate layer 3 is provided between the non-ceramic base body 2 and the sol-gel layer 4. Furthermore, a cover layer 5 is applied to the sol-gel layer 4. The cover layer 5 closes the component 1 upwards or outwards.

Preferably, the intermediate layer 3 and the cover layer 5 are as

Function layers formed. This way you can add an extra

Achieve corrosion protection. Preferably, the intermediate layer 3 and the cover layer 5 can be applied by means of an electroplating technique. Particular preference is given to using the metals copper, nickel or chromium, in particular the

Corrosion protection of the support material and the curing of these layers are used. By providing the sol-gel layer, a ceramic optic is produced with a simultaneously high color selection, in which an improvement of the mechanical and chemical component properties can also be set.

For the production of the component 1, the following steps are provided:

Applying the intermediate layer 3 to the base body 2,

- Applying the sol-gel layer 4 on the intermediate layer 3 and

- Applying the cover layer 5 on the sol-gel layer 4th

In this way, a method is provided in which a component with a ceramic optics can be produced in a simple manner.

The above explanation of the embodiments describes the present invention solely by way of example. Of course, individual features of the embodiments, if technically feasible, can be combined freely with one another, without departing from the scope of the present invention.

LIST OF REFERENCE NUMBERS

1 component

2 main body

3 interlayer

4 sol-gel layer

5 topcoat

Claims

Component with sol-gel layer and method for producing the component claims

1. component (1) on mobile controls for motor vehicles having

at least one non-ceramic basic body (2),

characterized in that

the component has a sol-gel layer (4),

- Which is applied to the base body (2) or

- Which is applied to an intermediate layer (3), wherein the

Intermediate layer (3) between the sol-gel layer (4) and the base body (2) is arranged.

2. Component (1) according to claim 1,

characterized in that

a cover layer (5) is disposed on the sol-gel layer (4).

3. component (1) according to one of the preceding claims,

characterized in that

the intermediate layer (3) and / or the cover layer (5) are formed as functional layers.

4. component (1) according to one of the preceding claims,

characterized in that

the intermediate layer (3) and / or the cover layer (5) can be applied by means of an electroplating technique.

5. component (1) one of the preceding claims,

characterized in that

the intermediate layer (3) and / or the cover layer (5) are formed as a sol-gel layer.

6. component (1) one of the preceding claims,

characterized in that

the sol-gel layer (4) has a defined degree of gloss.

7. component (1) according to one of the preceding claims,

characterized in that

the sol-gel layer (4) colored according to a defined color system

is configured, and / or has black, white or gray portions.

8. A process for the production of components (1) with a non-ceramic

Basic body (2) on mobile controls for motor vehicles comprising one of the following steps:

- Applying a sol-gel layer (4) on the base body (2) or

- Applying the sol-gel layer (4) on an intermediate layer (3), wherein the intermediate layer (3) has previously been applied to the base body (2) to produce a ceramic optic.

9. The method according to claim 8, further comprising the step:

- Applying a cover layer (5) on the sol-gel layer (4).