Method to obtain a corrosion-resistant and shiny substrate

An anti-corrosion, substrate technology, especially in the field of very bright metal or non-metal substrates, which can solve the problems of yellowing, loss of adhesion of the silver layer to the substrate, etc.

Inactive Publication Date: 2009-02-18
ROPAL EURO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This leads to a loss of adhesion of the silver layer to the substrate and eventually to a yellow color

Method used

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  • Method to obtain a corrosion-resistant and shiny substrate
  • Method to obtain a corrosion-resistant and shiny substrate
  • Method to obtain a corrosion-resistant and shiny substrate

Examples

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Embodiment Construction

[0109] The sequence of embodiments of the method according to the invention will now be described with reference to the coating of light metal rims. Figure 1a A schematic partial cross-sectional view of the first substrate 1 is shown in cross-section of an aluminum light metal rim 2 . For the sake of clarity, the unevenness 3 of the metal surface is drawn and shown schematically. Firstly, the surface of the substrate 1 can be degreased in two etching steps. This is to remove the release agent residue from the substrate manufacturing process that may exist on the surface of the substrate 1 . In particular, the two degreasing steps are carried out in such a way that the light metal rim 2 is first immersed in a preferably alkaline etching bath. In a second etching step, the light metal rim 2 is immersed in a preferably alkaline etching bath at 60°C. Etching residues on the light metal rim 2 are subsequently removed by washing. The surface of the light metal rim 2 or substrat...

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Abstract

The present invention relates to a process for producing a metallic and/or nonmetallic substrate which is protected against corrosion at least in regions and is, in particular, shiny, which comprises a) provision of a substrate having at least one surface which can be coated at least in regions and b) application of at least one metallic protective layer comprising a first metal, a first noble metal or a first metal alloy and at least one acid, an oxide, double oxide, hydrated oxide, sulphide, halide, nitride, carbide, carbonitride, boride, silicide, oxyhalide and/or salt of a second metal, of a second noble metal and/or of a second metal alloy. The invention further relates to a substrate which is protected against corrosion at least in regions and is, in particular, shiny, which comprises a substrate and at least one metallic protective layer comprising a first metal, a first noble metal or a first metal alloy and at least one acid, an oxide, double oxide, hydrated oxide, sulphide, halide, nitride, carbide, carbonitride, boride, silicide, oxyhalide, in particular oxyfluoride, and/or salt of a second metal, of a second noble metal and/or of a second metal alloy.

Description

technical field [0001] The present invention relates to methods of making corrosion-resistant, especially very bright metallic or non-metallic substrates, and to corrosion-resistant, particularly very bright metallic or non-metallic substrates and their use. Background technique [0002] The visual adjustment of any substrate by which it assumes a metallic effect has long been known. Here, layers that are very different from each other are applied to the substrate in a range of different sequences, wherein the layers include at least one metal layer. The basic requirements for a substrate coated with a metal layer are an excellent corrosion resistance and a pleasing visual appearance, for example by means of which the coated substrate appears completely are metal or chrome-plated bases. Of particular importance are coated substrates in the automotive industry, for example in the manufacture of wheels or rims, in particular light metal wheels or light metal rims, for which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/58C23C14/16C23C22/34C23C22/36
CPCC23C14/024C23C14/165Y10T428/31703Y10T428/31678C23C14/5806Y10T428/12736Y02T50/67Y10T428/265Y10T428/12493C23C22/34C23C14/021Y02T50/60
Inventor M·库什G·乌拜林
Owner ROPAL EURO
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